Disproving Conjectures with Counterexamples
|
|
|
- Samuel Pearson
- 5 years ago
- Views:
Transcription
1 Disproving Conjectures with Counterexamples
2 Consider the simple conjecture given below. If two lines are both intersected by a transversal, then they are parallel. This conjecture is false: two lines do not have to be parallel to be intersected by a transversal. A simple way to prove that this statement is not true is to use a counterexample.
3 Counterexample - An example that proves a conjecture or statement false. For example, the diagram shows a pair of lines that are not parallel, but they are intersected by a transversal. It disproves the statement given above because it gives a specific example where the statement is no true. To construct a counterexample, find a situation where the hypothesis of the statement is true but the conclusion is false.
4 Use the conjecture to answer a and b. If a triangle is isosceles, then it is acute. a. What is the hypothesis of the conjecture? What is its conclusion? SOLUTION Hypothesis: The triangle is isosceles. Conclusion: The triangle is acute.
5 b. Find a counterexample to the conjecture. SOLUTION A counterexample would be an example of a triangle for which the hypothesis is true, but the conclusion is false; that is, a triangle that is isosceles but not acute. Consider this right triangle, ABC. Since BC and AB are congruent, ABC is isosceles. Since B is a right angle, ABC is not an acute triangle. Therefore, ABC Is a counterexample to the conjecture.
6 Not all conjectures are geometric. Counterexamples can be used to disprove algebraic conjectures or any other kind of conjecture.
7 a. Find a counterexample to the conjecture. Every quadratic equation has either no solution or two solutions. SOLUTION You probably remember that sometimes quadratic equations can have only one solution. Such an equation would have to have only one x-intercept. A simple example is the parent function for quadratic equations. 0 = x 2 This equation can be solved by graphing, using the quadratic formula, or factoring. The answer is x = 0. Since this is a quadratic equation that has only one solution, the statement is proven false by this counterexample.
8 b. Find a counterexample to the conjecture. If 5x - 10 = 15, then 2x + y > 9. SOLUTION First, solve the hypothesis of this statement. We find that for the hypothesis to be true, x = 5. Then substitute x = 5 into the conclusion to solve for y. 2x + y > 9 2(5) + y > 9 y > -1 So for the conclusion to be true, y must be greater than -1. A counterexample to the statement is any value of y that is less than -1. Only one counterexample is needed, so a possible answer is y = -2.
9 Use the data in the table to prove the conjecture false. If a planet orbits our Sun, its orbital period (year) is proportional to its distance from the Sun. SOLUTION The hypothesis of the conjecture, the planet orbits our Sun, is true for all three planets in the table. If Orbital Period the conclusion were true, the ratio Distance from Sun should be the same for all three planets. Extend the table by calculating this proportion for each planet:
10 By looking at the fourth column of the table, it is clear that the proportion is not always the same. Any two of these planets provide a counterexample that proves the statement false. By looking at the fourth column of the table, it is clear that the proportion is not always the same. Any two of these planets provide a counterexample that proves the statement false.
11 Use the conjecture below to answer a and b. If line a is perpendicular to line b and to line c, then lines b and c are perpendicular. a. What is the hypothesis of the conjecture? What is its conclusion? b. Find a counterexample to the conjecture.
12 Use the conjecture below to answer c and d. If x 2 = 9, then x = 3. c. What is the hypothesis of the conjecture? What is its conclusion? d. Find a counterexample to the conjecture. e.the masses of two sedimentary rocks are 327 grams and 568 grams, respectively. Their volumes are 275 cm 3 and 501 cm 3, respectively. Explain how this data disproves the conjecture below. If a rock is sedimentary, then its mass is proportional to its volume.
13 Page 86 Lesson Practice (Ask Mr. Heintz) Page 87 Practice 1-30 (Do the starred ones first)
Algebra 1. Predicting Patterns & Examining Experiments. Unit 5: Changing on a Plane Section 4: Try Without Angles
Section 4 Examines triangles in the coordinate plane, we will mention slope, but not angles (we will visit angles in Unit 6). Students will need to know the definition of collinear, isosceles, and congruent...
Unit 1: Introduction to Proof
Unit 1: Introduction to Proof Prove geometric theorems both formally and informally using a variety of methods. G.CO.9 Prove and apply theorems about lines and angles. Theorems include but are not restricted
Reasoning and Proof Unit
Reasoning and Proof Unit 1 2 2 Conditional Statements Conditional Statement if, then statement the if part is hypothesis the then part is conclusion Conditional Statement How? if, then Example If an angle
Geometry Chapter 3 3-6: PROVE THEOREMS ABOUT PERPENDICULAR LINES
Geometry Chapter 3 3-6: PROVE THEOREMS ABOUT PERPENDICULAR LINES Warm-Up 1.) What is the distance between the points (2, 3) and (5, 7). 2.) If < 1 and < 2 are complements, and m < 1 = 49, then what is
Chapter 2 Practice Test
Name: Class: Date: ID: A Chapter 2 Practice Test 1. What is a counterexample for the conjecture? Conjecture: Any number that is divisible by 4 is also divisible by 8. 2. What is the conclusion of the following
Name: Class: Date: B. The twentieth term is A. D. There is not enough information.
Class: Date: Chapter 2 Review 1. Based on the pattern, what are the next two terms of the sequence? 9, 15, 21, 27,... A. 33, 972 B. 39, 45 C. 162, 972 D. 33, 39 2. What conjecture can you make about the
2-6 Geometric Proof. Warm Up Lesson Presentation Lesson Quiz. Holt Geometry
2-6 Geometric Proof Warm Up Lesson Presentation Lesson Quiz Warm Up Determine whether each statement is true or false. If false, give a counterexample. 1. It two angles are complementary, then they are
Geometry GENERAL GEOMETRY
Geometry GENERAL GEOMETRY Essential Vocabulary: point, line, plane, segment, segment bisector, midpoint, congruence I can use the distance formula to determine the area and perimeters of triangles and
Integrated Math III. IM3.1.2 Use a graph to find the solution set of a pair of linear inequalities in two variables.
Standard 1: Algebra and Functions Students solve inequalities, quadratic equations, and systems of equations. They graph polynomial, rational, algebraic, and piece-wise defined functions. They graph and
Integrated Math II. IM2.1.2 Interpret given situations as functions in graphs, formulas, and words.
Standard 1: Algebra and Functions Students graph linear inequalities in two variables and quadratics. They model data with linear equations. IM2.1.1 Graph a linear inequality in two variables. IM2.1.2
right angle an angle whose measure is exactly 90ᴼ
right angle an angle whose measure is exactly 90ᴼ m B = 90ᴼ B two angles that share a common ray A D C B Vertical Angles A D C B E two angles that are opposite of each other and share a common vertex two
Geometry First Semester Exam Review
Geometry First Semester Exam Review Multiple Choice Identify the choice that best completes the statement or answers the question. 1. Name three points that are collinear. a. points T, Q, and R c. points
Unit 2: Logic and Reasoning. start of unit
Unit 2: Logic and Reasoning Prior Unit: Introduction to Geometry Next Unit: Transversals By the end of this unit I will be able to: Skill Self-Rating start of unit Date(s) covered Self-Rating end of unit
UNIT 1 SIMILARITY, CONGRUENCE, AND PROOFS Lesson 9: Proving Theorems About Triangles Instruction
Prerequisite Skills This lesson requires the use of the following skills: identifying and using vertical angles, supplementary angles, and complementary angles to find unknown angle measures recognizing
In Class Problem Set #15
In Class Problem Set #15 CSE 1400 and MTH 2051 Fall 2012 Relations Definitions A relation is a set of ordered pairs (x, y) where x is related to y. Let denote a relational symbol. Write x y to express
Chapter 2 Test Review. Complete each truth table.
1. Complete each truth table. 2. SCHOOL The Venn diagram shows the number of students in the band who work after school or on the weekends. 3. How many students work after school and on weekends? 4. How
Shape Perimeter Area. + s 3. + s 2. side 3 (s 3 ) base (b) and side 1 (s 1
Geometric Formulas Reteaching 91 Math Course 1, Lesson 91 Shape Perimeter Area Square P = 4s A = s 2 Rectangle P = 2l + 2w A = lw Parallelogram P = 2b + 2s A = bh Triangle P = s 1 + s 2 + s 3 A = 1 2 bh
Right Triangles
30 60 90 Right Triangles The 30-60 -90 triangle is another special triangle. Like the 45-45 -90 triangle, properties of the 30-60 -90 triangle can be used to find missing measures of a triangle if the
NAME DATE PER. 1. ; 1 and ; 6 and ; 10 and 11
SECOND SIX WEEKS REVIEW PG. 1 NME DTE PER SECOND SIX WEEKS REVIEW Using the figure below, identify the special angle pair. Then write C for congruent, S for supplementary, or N for neither. d 1. ; 1 and
Unit 2: Geometric Reasoning Section 1: Inductive Reasoning
Unit 2: Geometric Reasoning Section 1: Inductive Reasoning Ex #1: Find the next item in the pattern. January, March, May,... Ex #2: Find the next item in the pattern. 7, 14, 21, 28, Ex #3: Find the next
South Slave Divisional Education Council. Math 20-2
South Slave Divisional Education Council Math 20-2 Curriculum Package February 2012 2012 Strand: Measurement General Outcome: Develop spatial sense and proportional reasoning. Solve problems that involve
Name: Date: Period: ID: REVIEW CH 1 TEST REVIEW. 1. Sketch and label an example of each statement. b. A B. a. HG. d. M is the midpoint of PQ. c.
Name: Date: Period: ID: REVIEW CH 1 TEST REVIEW 1 Sketch and label an example of each statement a HG b A B c ST UV d M is the midpoint of PQ e Angles 1 and 2 are vertical angles f Angle C is a right angle
6-4 Solving Special Systems
6-4 Solving Special Systems Warm Up Lesson Presentation Lesson Quiz 1 2 pts Bell Quiz 6-4 Solve the equation. 1. 2(x + 1) = 2x + 2 3 pts Solve by using any method. 2. y = 3x + 2 2x + y = 7 5 pts possible
Algebra 1 (cp) Midterm Review Name: Date: Period:
Algebra 1 (cp) Midterm Review Name: Date: Period: Chapter 1 1. Evaluate the variable expression when j 4. j 44 [1] 2. Evaluate the variable expression when j 4. 24 j [2] 3. Find the perimeter of the rectangle.
Correlation: California State Curriculum Standards of Mathematics for Grade 6 SUCCESS IN MATH: BASIC ALGEBRA
Correlation: California State Curriculum Standards of Mathematics for Grade 6 To SUCCESS IN MATH: BASIC ALGEBRA 1 ALGEBRA AND FUNCTIONS 1.0 Students write verbal expressions and sentences as algebraic
Integrated Math 3 Math 3 Course Description:
Course Description: Integrated Math 3 Math 3 Course Description: Integrated strands include algebra, functions, geometry, trigonometry, statistics, probability and discrete math. Scope and sequence includes
California: Algebra 1
Algebra Discovering Algebra An Investigative Approach California: Algebra 1 Grades Eight Through Twelve Mathematics Content Standards 1.0 Students identify and use the arithmetic properties of subsets
UNIT 3 CIRCLES AND VOLUME Lesson 1: Introducing Circles Instruction
Prerequisite Skills This lesson requires the use of the following skills: performing operations with fractions understanding slope, both algebraically and graphically understanding the relationship of
Writing: Answer each question with complete sentences. 1) Explain what it means to bisect a segment. Why is it impossible to bisect a line?
Writing: Answer each question with complete sentences. 1) Explain what it means to bisect a segment. Why is it impossible to bisect a line? 2) Are all linear pairs supplementary angles? Are all supplementary
Geometry CP Review WS
Geometry CP 2.1-2.5 Review WS Name 1. a) Use inductive reasoning to sketch the fourth figure in each pattern. Figure 4 b) How many squares are in the next object? 2. Use inductive reasoning to write the
Prentice Hall Geometry and Algebra 2, North Carolina Editions 2011
Prentice Hall Geometry and Algebra 2, C O R R E L A T E D T O Number and Operations MBC.N.1 Represent expressions involving rational exponents in various forms. MBC.N.1.1 Translate numbers with rational
2) Are all linear pairs supplementary angles? Are all supplementary angles linear pairs? Explain.
1) Explain what it means to bisect a segment. Why is it impossible to bisect a line? 2) Are all linear pairs supplementary angles? Are all supplementary angles linear pairs? Explain. 3) Explain why a four-legged
(b) Follow-up visits: December, May, October, March. (c ) 10, 4, -2, -8,..
Geometry Honors - Chapter 2 Reasoning and Proof Section 2-1 Inductive Reasoning and Conjecture I can explore inductive and deductive reasoning. I can find counterexamples to disprove conjectures. I can
Algebra II Learning Targets
Chapter 0 Preparing for Advanced Algebra LT 0.1 Representing Functions Identify the domain and range of functions LT 0.2 FOIL Use the FOIL method to multiply binomials LT 0.3 Factoring Polynomials Use
Triangle Geometry. Often we can use one letter (capitalised) to name an angle.
1) Naming angles Triangle Geometry Often we can use one letter (capitalised) to name an angle. A C B When more than two lines meet at a vertex, then we must use three letters to name an angle. Q X P T
Geometry Unit 2 Notes Logic, Reasoning and Proof
Geometry Unit 2 Notes Logic, Reasoning and Proof Review Vocab.: Complementary, Supplementary and Vertical angles. Syllabus Objective: 2.1 - The student will differentiate among definitions, postulates,
Characteristics of Linear Functions (pp. 1 of 8)
Characteristics of Linear Functions (pp. 1 of 8) Algebra 2 Parent Function Table Linear Parent Function: x y y = Domain: Range: What patterns do you observe in the table and graph of the linear parent
JANE LONG ACADEMY HIGH SCHOOL MATH SUMMER PREVIEW PACKET SCHOOL YEAR. Geometry
JANE LONG ACADEMY HIGH SCHOOL MATH SUMMER PREVIEW PACKET 2015-2016 SCHOOL YEAR Geometry STUDENT NAME: THE PARTS BELOW WILL BE COMPLETED ON THE FIRST DAY OF SCHOOL: DUE DATE: MATH TEACHER: PERIOD: Algebra
Midpoint M of points (x1, y1) and (x2, y2) = 1 2
Geometry Semester 1 Exam Study Guide Name Date Block Preparing for the Semester Exam Use notes, homework, checkpoints, quizzes, and tests to prepare. If you lost any of the notes, reprint them from my
1.1 Inductive Reasoning filled in.notebook August 20, 2015
1.1 Inductive Reasoning 1 Vocabulary Natural or Counting Numbers Ellipsis Scientific Method Hypothesis or Conjecture Counterexample 2 Vocabulary Natural or Counting Numbers 1, 2, 3, 4, 5... positive whole
Warm Up Lesson Presentation Lesson Quiz. Holt McDougal Geometry
5-5 Indirect Proof and and Inequalities in in One One Triangle Warm Up Lesson Presentation Lesson Quiz Geometry Warm Up 1. Write a conditional from the sentence An isosceles triangle has two congruent
Suggested problems - solutions
Suggested problems - solutions Parallel lines Material for this section references College Geometry: A Discovery Approach, 2/e, David C. Kay, Addison Wesley, 2001. In particular, see section 4.1, pp 219-223.
Chapter 2. Reasoning and Proof
Chapter 2 Reasoning and Proof 2.1 Use Inductive Reasoning Objective: Describe patterns and use deductive reasoning. Essential Question: How do you use inductive reasoning in mathematics? Common Core: CC.9-12.G.CO.9
Chapter 2 Test Review 1. Based on the pattern, what are the next two terms of the sequence? 8, 15, 22, 29,...
Number of Customers Geometry Honors Name: Chapter 2 Test Review 1. Based on the pattern, what are the next two terms of the sequence? 8, 15, 22, 29,... 2. Based on the pattern, what is the next figure
Geometry - Chapter 2 Corrective 1
Name: Class: Date: Geometry - Chapter 2 Corrective 1 Multiple Choice Identify the choice that best completes the statement or answers the question. 1. Make a table of values for the rule x 2 16x + 64 when
NAME DATE PERIOD. Inductive Reasoning and Conjecture. Make a conjecture based on the given information. Draw a figure to illustrate your conjecture.
2-1 NAME DATE PERIOD Skills Practice Inductive Reasoning and Conjecture Make a conjecture about the next item in each sequence. 1. 2. 4, 1, 2, 5, 8 3. 6, 1 1, 5, 9 2 2,4 4. 2, 4, 8, 16, 32 Make a conjecture
Prentice Hall Algebra 1, Foundations Series 2011 Correlated to: Washington Mathematics Standards, Algebra 1 (2008)
Algebra 1 A1.1. Core Content: Solving problems (Algebra) Students learn to solve many new types of problems in Algebra 1, and this first core content area highlights the types of problems students will
Correlation of 2012 Texas Essential Knowledge and Skills (TEKS) for Algebra I and Geometry to Moving with Math SUMS Moving with Math SUMS Algebra 1
Correlation of 2012 Texas Essential Knowledge and Skills (TEKS) for Algebra I and Geometry to Moving with Math SUMS Moving with Math SUMS Algebra 1 ALGEBRA I A.1 Mathematical process standards. The student
8-2 The Pythagorean Theorem and Its Converse. Find x. 27. SOLUTION: The triangle with the side lengths 9, 12, and x form a right triangle.
Find x. 27. The triangle with the side lengths 9, 12, and x form a right triangle. In a right triangle, the sum of the squares of the lengths of the legs is equal to the square of the length of the hypotenuse.
Geometry Note Cards EXAMPLE:
Geometry Note Cards EXAMPLE: Lined Side Word and Explanation Blank Side Picture with Statements Sections 12-4 through 12-5 1) Theorem 12-3 (p. 790) 2) Theorem 12-14 (p. 790) 3) Theorem 12-15 (p. 793) 4)
Content Standard 1: Numbers, Number Sense, and Computation
Content Standard 1: Numbers, Number Sense, and Computation Place Value Fractions Comparing and Ordering Counting Facts Estimating and Estimation Strategies Determine an approximate value of radical and
Properties of Isosceles and Equilateral Triangles
Properties of Isosceles and Equilateral Triangles In an isosceles triangle, the sides and the angles of the triangle are classified by their position in relation to the triangle s congruent sides. Leg
Warm Up Lesson Presentation Lesson Quiz. Holt McDougal Geometry
2-4 Warm Up Lesson Presentation Lesson Quiz Geometry Warm Up Write a conditional statement from each of the following. 1. The intersection of two lines is a point. If two lines intersect, then they intersect
SHELBY COUNTY SCHOOLS: GEOMETRY PRETEST AUGUST 2015 SEMESTER 1. Created to be taken with the ACT Quality Core Reference Sheet: Geometry.
SHELBY COUNTY SCHOOLS: GEOMETRY PRETEST AUGUST 2015 SEMESTER 1 Created to be taken with the ACT Quality Core Reference Sheet: Geometry. 1. The intersection of plane L and plane M is AB. Point P is in neither
Math Curriculum Guide. Grades 9-12
Math Curriculum Guide July 2013 Grades 9-12 Archdiocese of Oklahoma City Department of Catholic Education P.O. Box 32180 7501 Northwest Expressway Oklahoma City, Oklahoma 73123-0380 405.721.4202 Ninth
7. m JHI = ( ) and m GHI = ( ) and m JHG = 65. Find m JHI and m GHI.
1. Name three points in the diagram that are not collinear. 2. If RS = 44 and QS = 68, find QR. 3. R, S, and T are collinear. S is between R and T. RS = 2w + 1, ST = w 1, and RT = 18. Use the Segment Addition
Geometry Voic Mr. R. and Mr. K
2.1 Using Inductive Reasoning to Make Conjectures Learning Goal: Use inductive reasoning to identify patterns, make conjectures and find counterexamples to disprove conjectures. Video: http://player.discoveryeducation.com/index.cfm?guidassetid=b1b5f95d-f72e-4d18-b220-ff73204e9a74
Midterm Preparation Problems
Midterm Preparation Problems The following are practice problems for the Math 1200 Midterm Exam. Some of these may appear on the exam version for your section. To use them well, solve the problems, then
Basic Trigonometry. Trigonometry deals with the relations between the sides and angles of triangles.
Basic Trigonometry Trigonometry deals with the relations between the sides and angles of triangles. A triangle has three sides and three angles. Depending on the size of the angles, triangles can be: -
9-7. a: Solutions vary. Possible solution shown at right. b: Answers vary. Assuming there are no hidden cubes, V = 11 units 3.
Lesson 9.1.1 9-7. a: Solutions vary. Possible solution shown at right. b: Answers vary. Assuming there are no hidden cubes, V = 11 units 0 0 1 1 1 1 9-8. a: 4 5 b: 196:1 c: 9:1 9-9. Since the perimeter
Name: 2015 Midterm Review Period: Date:
GEOMETRY Name: 2015 Midterm Review Period: Date: To be prepared for your midterm, you will need to PRACTICE PROBLEMS and STUDY TERMS from the following chapters. Use this guide to help you practice. UNIT
Attendance Problems 1. Write a conditional from the sentence An isosceles triangle has two congruent sides.
Page 1! of 11! Attendance Problems 1. Write a conditional from the sentence An isosceles triangle has two congruent sides. 2. Write the contrapositive of the conditional If it is Tuesday, then John has
Downloaded from
Triangles 1.In ABC right angled at C, AD is median. Then AB 2 = AC 2 - AD 2 AD 2 - AC 2 3AC 2-4AD 2 (D) 4AD 2-3AC 2 2.Which of the following statement is true? Any two right triangles are similar
California Content Standard. Essentials for Algebra (lesson.exercise) of Test Items. Grade 6 Statistics, Data Analysis, & Probability.
California Content Standard Grade 6 Statistics, Data Analysis, & Probability 1. Students compute & analyze statistical measurements for data sets: 1.1 Compute the mean, median & mode of data sets 1.2 Understand
Indicate the answer choice that best completes the statement or answers the question. Find the volume of the solid.
Indicate the answer choice that best completes the statement or answers the question. Find the volume of the solid. A. 252.4 cm 3 B. 126.2 cm 3 C. 492.2 cm 3 D. 703.8 cm 3 F. 576 G. 288 H. 240 I. 336 Powered
NAME DATE PERIOD. Inductive Reasoning and Conjecture , 5, 9 2 2, 4
2-1 Skills Practice Inductive Reasoning and Conjecture Make a conjecture about the next item in each sequence. 1. 2. 4, 1, 2, 5, 8 3. 6, 1 1, 5, 9 2 2, 4 4. 2, 4, 8, 16, 32 Make a conjecture based on the
Algebra 1. Standard 1: Operations With Real Numbers Students simplify and compare expressions. They use rational exponents and simplify square roots.
Standard 1: Operations With Real Numbers Students simplify and compare expressions. They use rational exponents and simplify square roots. A1.1.1 Compare real number expressions. A1.1.2 Simplify square
Logic CHAPTER. 3.1 A Little Dash of Logic Two Methods of Logical Reasoning p. 101
CHAPTER Logic Riding a bicycle is a skill which, once learned, is rarely forgotten. What s more, bicycles are enough alike that if you can ride one bike, you can pretty much ride them all. This is an example
College Prep Geometry MID-TERM STUDY GUIDE. Mrs. Miller. Name: Due: Thursday, January 9, 2014
College Prep Geometry MID-TERM STUDY GUIDE Mrs. Miller Name: Due: Thursday, January 9, 04 To receive full credit you must have Tried EVERY PROBLEM Work shown for EVERY PROBLEM All work done in this packet
Chapter 8B - Trigonometric Functions (the first part)
Fry Texas A&M University! Spring 2016! Math 150 Notes! Section 8B-I! Page 79 Chapter 8B - Trigonometric Functions (the first part) Recall from geometry that if 2 corresponding triangles have 2 angles of
Section 2-1. Chapter 2. Make Conjectures. Example 1. Reasoning and Proof. Inductive Reasoning and Conjecture
Chapter 2 Reasoning and Proof Section 2-1 Inductive Reasoning and Conjecture Make Conjectures Inductive reasoning - reasoning that uses a number of specific examples to arrive at a conclusion Conjecture
GCSE 9-1 Mathematics Higher Tier Grade 9 Tough Paper Paper 2
GCSE 9-1 Mathematics Higher Tier Grade 9 Tough Paper Paper 2 Total marks 80 1 Hour 30 minutes PLEASE NOTE: This paper does not claim the questions included are Grade 9 questions. This paper was designed
Using Inductive and Deductive Reasoning
Big Idea 1 CHAPTER SUMMARY BIG IDEAS Using Inductive and Deductive Reasoning For Your Notebook When you make a conjecture based on a pattern, you use inductive reasoning. You use deductive reasoning to
California Common Core State Standards for Mathematics Standards Map Mathematics II
A Correlation of Pearson Integrated High School Mathematics Mathematics II Common Core, 2014 to the California Common Core State s for Mathematics s Map Mathematics II Copyright 2017 Pearson Education,
College Prep Geometry MID-TERM STUDY GUIDE. Mrs. Miller. Name: Due: Thursday, January 9, 2014
College Prep Geometry MID-TERM STUDY GUIDE Mrs. Miller Name: Due: Thursday, January 9, 04 To receive full credit you must have Tried EVERY PROBLEM Work shown for EVERY PROBLEM All work done in this packet
ALGEBRA I: State Standards, MPS Objectives and Essential Learnings
ALGEBRA I: s, s and s MA 12.1 Students will communicate number sense concepts using multiple representations to reason, solve problems, and make connections within mathematics and across disciplines. MA
p, p or its negation is true, and the other false
Logic and Proof In logic (and mathematics) one often has to prove the truthness of a statement made. A proposition is a (declarative) sentence that is either true or false. Example: An odd number is prime.
Chapter 2: Reasoning and Proof
Name: Chapter 2: Reasoning and Proof Guided Notes Geometry Fall Semester 2.1 Use Inductive Reasoning CH. 2 Guided Notes, page 2 Term Definition Example conjecture An unproven statement that is based on
The following statements are conditional: Underline each hypothesis and circle each conclusion.
Geometry Unit 2 Reasoning and Proof 2-1 Conditional Statements Conditional Statement a statement which has a hypothesis and conclusion, often called an if-then statement. Conditional statements are contain
Geometry Unit 2 Notes Logic, Reasoning and Proof
Geometry Unit Notes Logic, Reasoning and Proof Review Vocab.: Complementary, Supplementary and Vertical angles. Syllabus Objective:. - The student will justify conjectures and solve problem using inductive
ANALYTICAL GEOMETRY Revision of Grade 10 Analytical Geometry
ANALYTICAL GEOMETRY Revision of Grade 10 Analtical Geometr Let s quickl have a look at the analtical geometr ou learnt in Grade 10. 8 LESSON Midpoint formula (_ + 1 ;_ + 1 The midpoint formula is used
SUMMATIVE ASSESSMENT I, IX / Class IX
I, 0 SUMMATIVE ASSESSMENT I, 0 0 MATHEMATICS / MATHEMATICS MATHEMATICS CLASS CLASS - IX - IX IX / Class IX MA-0 90 Time allowed : hours Maximum Marks : 90 (i) (ii) 8 6 0 0 (iii) 8 (iv) (v) General Instructions:
Example 1: Identifying the Parts of a Conditional Statement
"If p, then q" can also be written... If p, q q, if p p implies q p only if q Example 1: Identifying the Parts of a Conditional Statement Identify the hypothesis and conclusion of each conditional. A.
2.1 If Then Statements
Chapter Deductive Reasoning Learn deductive logic Do your first - column proof New Theorems and Postulates **PUT YOUR LAWYER HAT ON!!. If Then Statements Recognize the hypothesis and conclusion of an ifthen
Triangle Congruence and Similarity Review. Show all work for full credit. 5. In the drawing, what is the measure of angle y?
Triangle Congruence and Similarity Review Score Name: Date: Show all work for full credit. 1. In a plane, lines that never meet are called. 5. In the drawing, what is the measure of angle y? A. parallel
Learning Targets: Standard Form: Quadratic Function. Parabola. Vertex Max/Min. x-coordinate of vertex Axis of symmetry. y-intercept.
Name: Hour: Algebra A Lesson:.1 Graphing Quadratic Functions Learning Targets: Term Picture/Formula In your own words: Quadratic Function Standard Form: Parabola Verte Ma/Min -coordinate of verte Ais of
MATH 8. Unit 1: Rational and Irrational Numbers (Term 1) Unit 2: Using Algebraic Properties to Simplify Expressions - Probability
MATH 8 Unit 1: Rational and Irrational Numbers (Term 1) 1. I CAN write an algebraic expression for a given phrase. 2. I CAN define a variable and write an equation given a relationship. 3. I CAN use order
Geometry: Notes
Geometry: 2.1-2.3 Notes NAME 2.1 Be able to write all types of conditional statements. Date: Define Vocabulary: conditional statement if-then form hypothesis conclusion negation converse inverse contrapositive
Midterm Review Packet. Geometry: Midterm Multiple Choice Practice
: Midterm Multiple Choice Practice 1. In the diagram below, a square is graphed in the coordinate plane. A reflection over which line does not carry the square onto itself? (1) (2) (3) (4) 2. A sequence
Geometry Midyear Exam Review 2017
Geometry Midyear Exam Review 201 From the Extra Practice section at the back of the book, these exercises will remind you of the topics studied. The problems start on page 818 and are referenced by Lesson
Honors Geometry Semester Review Packet
Honors Geometry Semester Review Packet 1) Explain what it means to bisect a segment. Why is it impossible to bisect a line? 2) Are all linear pairs supplementary angles? Are all supplementary angles linear
Diagnostic Assessment Number and Quantitative Reasoning
Number and Quantitative Reasoning Select the best answer.. Which list contains the first four multiples of 3? A 3, 30, 300, 3000 B 3, 6, 9, 22 C 3, 4, 5, 6 D 3, 26, 39, 52 2. Which pair of numbers has
Page 1 of 11 Name: 1) Which figure always has exactly four lines of reflection that map the figure onto itself? A) rectangle B) square C) regular octagon D) equilateral triangle ee4caab3 - Page 1 2) In
Correlation of Moving with Math Grade 7 to HSEE Mathematics Blueprint
Correlation of Moving with Math Grade 7 to HSEE Mathematics Blueprint Number Sense 1.0 Students know the properties of, and compute with, rational numbers expressed n a variety of forms: 1.1 Read, write
STAAR STANDARDS ALGEBRA I ALGEBRA II GEOMETRY
STANDARDS ALGEBRA I ALGEBRA II GEOMETRY STANDARDS ALGEBRA I TEKS Snapshot Algebra I (New TEKS 2015-16) Mathematical Process Standards A.1 Mathematical process standards. The student uses mathematical processes
Tangent Lines Unit 10 Lesson 1 Example 1: Tell how many common tangents the circles have and draw them.
Tangent Lines Unit 10 Lesson 1 EQ: How can you verify that a segment is tangent to a circle? Circle: Center: Radius: Chord: Diameter: Secant: Tangent: Tangent Lines Unit 10 Lesson 1 Example 1: Tell how
Geometry Summer Review Packet Page 1
June 017 Dear Geometry Students and Parents: Welcome to Geometry! For the 017-018 school year, we would like to focus your attention to the fact that many concepts from Algebra I are infused into Geometry.
Tangents and Circles, Part 1
Tangents and Circles, Part 1 A tangent line lies in the same plane as a circle and intersects the circle at exactly one point. A radius of a circle drawn to a point of tangency meets the tangent line at
Billstein, Libeskind and Lott, A problem solving approach to Mathematics for elementary school teachers.
. Exploration with patterns. Solving problems by algebraic Method. The Geometer s Sketchpad 4. -dimentional geometry 5. Statistical investigations 6. Measures of Central tendency and Spread 7. Fundamental
Chapter 2. Reasoning and Proof
Chapter 2 Reasoning and Proof 2.1 Inductive Reasoning 2.2 Analyze Conditional Statements 2.3 Apply Deductive Reasoning 2.4 Use Postulates and Diagrams 2.5 Algebraic Proofs 2.6 Segments and Angles Proofs