# Wahkiakum School District, Pre-EOC Geometry 2012

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1 Pre-EOC Assesment Geometry #1 Wahkiakum School District GEOM Page 1

2 1. What is the converse of If there are clouds in the sky, then it is raining? 2-2 A If it is raining, then there are clouds in the sky. B If it is not raining, then there are clouds in the sky. C If it is raining, then there are no clouds in the sky. D If it is not raining, then there are no clouds in the sky. 2. Given LM = MP and L, M, and P are collinear, which of the following BEST describes the relationship of L, M, and P? 1-2 A LM MP B M is the midpoint of LP. C M bisects LP. D All of the above 3. Two congruent triangles have the following corresponding parts: RS UV, RT UW, and R U. Which is NOT necessarily a correct congruence statement? 4-5 A RST UVW B STR VWU C TRS VWU D TRS WUV 4. What postulate or theorem proves K M? Two angles of a triangle measure 22 O and 53 O. What is the measure of the third angle? 4-2 A 15 O C 75 O B 25 O D 105 O 6. Find the values of the variables. Give your answers in simplest radical form. 5-8 GEOM Page 2

3 7. Find m D to the nearest degree Given: X is the midpoint of AC Prove: X is the midpoint of BD. GEOM Page 3

4 9. What is the inverse of the conditional statement If a number is divisible by 6, then it is divisible by 3? 2-2 A If a number is divisible by 3, then it is divisible by 6. B If a number is not divisible by 6, then it is not divisible by 3. C If a number is not divisible by 3, then it is not divisible by 6. D If a number is not divisible by 6, then it is divisible by What is the length of the longest side of the triangle? 4-1 A 8.5 C 19 B 26 D Given: ABCD is a parallelogram, AC BD, and AB CD. 6-5 Conclusion: ABCD is a square. What can be said about the conclusion? A Valid B Not valid 12. Which of the quadrilaterals MUST be parallelograms? 6-3 A A only B B only C Neither A nor B D Both A and B GEOM Page 4

5 Use the partially completed two-column proof for the next three problems. Given: GJ bisects FGH, FG HG Prove: FJ HJ Proof: Statements Reasons 1. GJ bisects FGH. 1. Given 2. FGJ HGJ 2. Def. of bisector 3. FG HG 3. Given 4. F H 4.? 5. FGJ HGJ 5.? 6. FJ HJ 6.? 13. Which reason belongs in Step 4? 4-8 A Isosc. Thm. B Conv. of Isosc. Thm. C ASA D Def. of bisector 14. Which reason belongs in Step 5? 4-5 A Isosc. Thm. B ASA C CPCTC D HL 15. Which reason belongs in Step 6? 4-6 A Isosc. Thm. B ASA C CPCTC D Def. of bisector GEOM Page 5

6 16. Given parallelogram JKLM which is valid? 6-5 A If JXK KXL, then JKLM is a rhombus. B If JXM JXK, then JKLM is a square. C If JXM LXK, then JKLM is a square. D If MJK KXL, then JKLM is a rectangle. 17. When the angle of elevation of the sun is 50, a flagpole casts a shadow that is 16.8 feet long. What is the height of the flagpole to the nearest foot? 8-4 A 14 ft B 20 ft 18. A cottage has a gable roof. To the nearest foot, how wide is the cottage? 8-3 A 12 ft B 24 ft C 35 ft D 70 ft GEOM Page 6

7 19. What is the area of JKL if the coordinates of J, K, and L are J(0, 0), K(0, 3), and L(4, 0)? 9-4 A 6 units 2 C 12 units 2 B 6 units D 12 units Use the partially completed two-column proof for the problem below. Given: Prove: GHF MOL Proof: Statements Reasons 1. GF ML, 1. Given FH LO, GH MO 2. F L 2.? 3. H O 3. Given 4. G M 4.? 5. GHF MOL 5.? 20. Which reason does NOT belong in the proof? 4-6 A Def. of s B Third s Thm. C Rt. Thm. D CPCTC GEOM Page 7

8 21. Which points are the vertices of a rectangle that is NOT a square? 6-5 A ( 10, 10), (0, 0), (14, 2), (4, 12) B ( 4, 1), ( 1, 4), (5, 2), (2, 5) C (2, 2), (6, 2), (2, 6), ( 2, 2) D Not here 22. M is the midpoint of RS and R has coordinates (2, 5). M has coordinates (6, 9). Find the coordinates of S. 1-6 A (4.5, 6.5) C (4, 4) B (10, 13) D (16, 16) Use the partially completed two-column proof for the two problems below. Given: JK LK ; JYL and LXJ are rt. s. Prove: JY Proof: LX Statements Reasons 1. KJL KLJ 1.? 2. JL LJ 2.? 3. JYL and LXJ 3. Given are rt. s. 4. JYL LXJ 4.? 5. JYL LXJ 5.? 6. JY LX 6.? 23. Which justification belongs in Step 1? 4-6 A Isosc. Thm. B Reflex. Prop. of C Rt. Thm. D CPCTC 24. Which justification belongs in Step 6? 4-6 A Isosc. Thm. C Rt. Thm. B HL D CPCTC GEOM Page 8

9 25. What should you do if you want to double the area of a rectangle? 9-4 A Double either the length or the width but not both. B Double both the length and the width. 26. If the radius of a circle is multiplied by 3, which is true? 9-4 A The circumference is tripled. B The area is tripled. Use the Given information for the two problems below. Given: An isosceles triangle ABC with AB BC and a perpendicular bisector BD from B to AC. 27. Position the figure in the coordinate plane and assign coordinates to each point so proving that the area of ABD is equal to the area of CBD using a coordinate proof would be easier to complete. 4-7 GEOM Page 9

10 28. Write a coordinate proof to prove that the area of ABD is equal to the area of CBD An air-traffic controller at an airport sights a plane at an angle of elevation of 34. The pilot reports that the plane s altitude is 3200 feet. To the nearest foot, what is the horizontal distance between the plane and the airport? 8-4 A 4744 ft B 2159 ft 30. The altitude to the hypotenuse of a right triangle has a length of 12. What could be the lengths of the two segments of the hypotenuse? 8-3 A 2 and 6 C 6 and 24 B 2 and 8 D 6 and 30 GEOM Page 10

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