# 0809ge. Geometry Regents Exam Based on the diagram below, which statement is true?

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1 0809ge 1 Based on the diagram below, which statement is true? 3 In the diagram of ABC below, AB AC. The measure of B is 40. 1) a b ) a c 3) b c 4) d e What is the measure of A? 1) 40 ) 50 3) 70 4) 100 The diagram below shows the construction of the bisector of ABC. 4 In the diagram of circle O below, chord CD is parallel to diameter AOB and mac = 30. Which statement is not true? 1) m EBF = 1 m ABC ) m DBF = 1 m ABC 3) m EBF = m ABC 4) m DBF = m EBF What is mcd? 1) 150 ) 10 3) 100 4) 60 1

2 5 In the diagram of trapezoid ABCD below, diagonals AC and BD intersect at E and ABC DCB. 7 In the diagram below of parallelogram ABCD with diagonals AC and BD, m 1 = 45 and m DCB = 10. Which statement is true based on the given information? 1) AC BC ) CD AD 3) CDE BAD 4) CDB BAC What is the measure of? 1) 15º ) 30º 3) 45º 4) 60º 6 Which transformation produces a figure similar but not congruent to the original figure? 1) T 1,3 ) D 1 3) R 90 4) r y = x 8 On the set of axes below, Geoff drew rectangle ABCD. He will transform the rectangle by using the translation (x,y) (x +,y + 1) and then will reflect the translated rectangle over the x-axis. What will be the area of the rectangle after these transformations? 1) exactly 8 square units ) less than 8 square units 3) greater than 8 square units 4) It cannot be determined from the information given.

3 9 What is the equation of a line that is parallel to the line whose equation is y = x +? 1) x + y = 5 ) x + y = 3) y x = 1 4) y x = 3 13 The diagonal AC is drawn in parallelogram ABCD. Which method can not be used to prove that ABC CDA? 1) SSS ) SAS 3) SSA 4) ASA 10 The endpoints of CD are C(, 4) and D(6,). What are the coordinates of the midpoint of CD? 1) (,3) ) (, 1) 3) (4, ) 4) (4,3) 14 In the diagram below, line k is perpendicular to plane P at point T. 11 What are the center and the radius of the circle whose equation is (x 3) + (y + 3) = 36 1) center = (3, 3); radius = 6 ) center = ( 3,3); radius = 6 3) center = (3, 3); radius = 36 4) center = ( 3,3); radius = 36 1 Given the equations: y = x 6x + 10 y + x = 4 What is the solution to the given system of equations? 1) (,3) ) (3,) 3) (,) and (1,3) 4) (,) and (3,1) Which statement is true? 1) Any point in plane P also will be on line k. ) Only one line in plane P will intersect line k. 3) All planes that intersect plane P will pass through T. 4) Any plane containing line k is perpendicular to plane P. 3

4 15 In the diagram below, which transformation was used to map ABC to A B C? 18 A quadrilateral whose diagonals bisect each other and are perpendicular is a 1) rhombus ) rectangle 3) trapezoid 4) parallelogram 1) dilation ) rotation 3) reflection 4) glide reflection 19 If the endpoints of AB are A( 4,5) and B(, 5), what is the length of AB? 1) 34 ) 3) 61 4) 8 16 Which set of numbers represents the lengths of the sides of a triangle? 1) {5,18,13} ) {6,17,} 3) {16,4,7} 4) {6,8,15} 0 In the diagram below of ACT, D is the midpoint of AC, O is the midpoint of AT, and G is the midpoint of CT. 17 What is the slope of a line perpendicular to the line whose equation is y = 3 x 5? 1) 3 ) 3 3) 3 4) 3 If AC = 10, AT = 18, and CT =, what is the perimeter of parallelogram CDOG? 1) 1 ) 5 3) 3 4) 40 4

5 1 Which equation represents circle K shown in the graph below? 3 In the diagram of circle O below, chord AB intersects chord CD at E, DE = x + 8, EC = 3, AE = 4x 3, and EB = 4. 1) (x + 5) + (y 1) = 3 ) (x + 5) + (y 1) = 9 3) (x 5) + (y + 1) = 3 4) (x 5) + (y + 1) = 9 What is the value of x? 1) 1 ) 3.6 3) 5 4) 10.5 In the diagram below of right triangle ACB, altitude CD is drawn to hypotenuse AB. 4 What is the negation of the statement Squares are parallelograms? 1) Parallelograms are squares. ) Parallelograms are not squares. 3) It is not the case that squares are parallelograms. 4) It is not the case that parallelograms are squares. If AB = 36 and AC = 1, what is the length of AD? 1) 3 ) 6 3) 3 4) 4 5

6 5 The diagram below shows the construction of the center of the circle circumscribed about ABC. 8 How many common tangent lines can be drawn to the two externally tangent circles shown below? 1) 1 ) 3) 3 4) 4 This construction represents how to find the intersection of 1) the angle bisectors of ABC ) the medians to the sides of ABC 3) the altitudes to the sides of ABC 4) the perpendicular bisectors of the sides of ABC 9 In the diagram below of isosceles trapezoid DEFG, DE GF, DE = 4x, EF = 3x +, FG = 5x 3, and GD = x + 5. Find the value of x. 6 A right circular cylinder has a volume of 1,000 cubic inches and a height of 8 inches. What is the radius of the cylinder to the nearest tenth of an inch? 1) 6.3 ) 11. 3) ) If two different lines are perpendicular to the same plane, they are 1) collinear ) coplanar 3) congruent 4) consecutive 6

7 30 A regular pyramid with a square base is shown in the diagram below. 33 The degree measures of the angles of ABC are represented by x, 3x, and 5x 54. Find the value of x. 34 In the diagram below of ABC with side AC extended through D, m A = 37 and m BCD = 117. Which side of ABC is the longest side? Justify your answer. A side, s, of the base of the pyramid is 1 meters, and the height, h, is 4 meters. What is the volume of the pyramid in cubic meters? 31 Write an equation of the line that passes through the point (6, 5) and is parallel to the line whose equation is x 3y = Write an equation of the perpendicular bisector of the line segment whose endpoints are ( 1,1) and (7, 5). [The use of the grid below is optional] 3 Using a compass and straightedge, construct the angle bisector of ABC shown below. [Leave all construction marks.] 7

8 36 On the set of axes below, sketch the points that are 5 units from the origin and sketch the points that are units from the line y = 3. Label with an X all points that satisfy both conditions. 37 Triangle DEG has the coordinates D(1,1), E(5,1), and G(5,4). Triangle DEG is rotated 90 about the origin to form D E G. On the grid below, graph and label DEG and D E G. State the coordinates of the vertices D', E', and G'. Justify that this transformation preserves distance. 38 Given: Quadrilateral ABCD, diagonal AFEC, AE FC, BF AC, DE AC, 1 Prove: ABCD is a parallelogram. 8

9 ID: A 0809ge Answer Section 1 ANS: 4 The marked 60º angle and the angle above it are on the same straight line and supplementary. This unmarked supplementary angle is 10º. Because the unmarked 10º angle and the marked 10º angle are alternate exterior angles and congruent, d e. PTS: REF: ge STA: G.G.35 TOP: Parallel Lines and Transversals ANS: 3 PTS: REF: 08090ge STA: G.G.17 TOP: Constructions 3 ANS: ( ) = 100 PTS: REF: ge STA: G.G.31 TOP: Isosceles Triangle Theorem 4 ANS: Parallel chords intercept congruent arcs. mac = mbd = = 10. PTS: REF: ge STA: G.G.5 TOP: Chords 5 ANS: 4 PTS: REF: ge STA: G.G.9 TOP: Triangle Congruency 6 ANS: A dilation affects distance, not angle measure. PTS: REF: ge STA: G.G.60 TOP: Identifying Transformations 7 ANS: 1 DCB and ADC are supplementary adjacent angles of a parallelogram = 60. = = 15. PTS: REF: ge STA: G.G.38 TOP: Parallelograms 8 ANS: 1 Translations and reflections do not affect distance. PTS: REF: ge STA: G.G.59 TOP: Properties of Transformations 9 ANS: 3 The slope of y = x + is 1. The slope of y x = 1 is A B = ( 1) = 1. 1 PTS: REF: ge STA: G.G.63 TOP: Parallel and Perpendicular Lines 10 ANS: M x = + 6 =. M y = 4 + = 1 PTS: REF: ge STA: G.G.66 TOP: Midpoint 11 ANS: 1 PTS: REF: ge STA: G.G.73 TOP: Equations of Circles 1

10 ID: A 1 ANS: 4 y + x = 4 y = x + 4. x 6x + 10 = x + 4. y + x = 4. y + = 4 x 5x + 6 = 0 (x 3)(x ) = 0 x = 3 or y + 3 = 4 y = 1 PTS: REF: 08091ge STA: G.G.70 TOP: Quadratic-Linear Systems 13 ANS: 3 PTS: REF: ge STA: G.G.8 TOP: Triangle Congruency 14 ANS: 4 PTS: REF: ge STA: G.G.7 TOP: Planes 15 ANS: 4 PTS: REF: ge STA: G.G.56 TOP: Identifying Transformations 16 ANS: > y = PTS: REF: ge STA: G.G.33 TOP: Triangle Inequality Theorem 17 ANS: 4 The slope of y = 3 x 5 is. Perpendicular lines have slope that are opposite reciprocals. 3 PTS: REF: ge STA: G.G.6 TOP: Parallel and Perpendicular Lines 18 ANS: 1 PTS: REF: ge STA: G.G.41 TOP: Special Quadrilaterals 19 ANS: 1 d = ( 4 ) + (5 ( 5)) = = 136 = 4 34 = 34. PTS: REF: ge STA: G.G.67 TOP: Distance 0 ANS: 3 PTS: REF: 08090ge STA: G.G.4 TOP: Midsegments 1 ANS: PTS: REF: 08091ge STA: G.G.7 TOP: Equations of Circles

11 ID: A ANS: 4 Let AD = x. 36x = 1 x = 4 PTS: REF: 0809ge STA: G.G.47 TOP: Similarity KEY: leg 3 ANS: 4(4x 3) = 3(x + 8) 16x 1 = 6x x = 36 x = 3.6 PTS: REF: 08093ge STA: G.G.53 TOP: Segments Intercepted by Circle KEY: two chords 4 ANS: 3 PTS: REF: 08094ge STA: G.G.4 TOP: Negations 5 ANS: 4 PTS: REF: 08095ge STA: G.G.1 TOP: Centroid, Orthocenter, Incenter and Circumcenter 6 ANS: 1 V = πr h 1000 = πr 8 r = π r 6.3 PTS: REF: 08096ge STA: G.G.14 TOP: Volume and Lateral Area 7 ANS: PTS: REF: 08097ge STA: G.G.4 TOP: Planes 8 ANS: 3 PTS: REF: 08098ge STA: G.G.50 TOP: Tangents KEY: common tangency 9 ANS: 3. The non-parallel sides of an isosceles trapezoid are congruent. x + 5 = 3x + x = 3 PTS: REF: 08099ge STA: G.G.40 TOP: Trapezoids 30 ANS: 016. V = 1 3 Bh = 1 3 s h = = 016 PTS: REF: ge STA: G.G.13 TOP: Volume 3

12 ID: A 31 ANS: y = 3 x 9. The slope of x 3y = 11 is A B = 3 = 3. 5 = 3 (6) + b 5 = 4 + b b = 9 PTS: REF: ge STA: G.G.65 TOP: Parallel and Perpendicular Lines 3 ANS: PTS: REF: 08093ge STA: G.G.17 TOP: Constructions 33 ANS: 6. x + 3x + 5x 54 = 180 9x = 34 x = 6 PTS: REF: ge STA: G.G.30 TOP: Interior and Exterior Angles of Triangles 34 ANS: AC. m BCA = 63 and m ABC = 80. AC is the longest side as it is opposite the largest angle. PTS: REF: ge STA: G.G.34 TOP: Angle Side Relationship 4

13 ID: A 35 ANS: y = 4 3 x 6. M x = M y = 1 + ( 5) = 3 = m = 1 ( 5) 1 7 = 3 4 The perpendicular bisector goes through (3, ) and has a slope of 4 3. y y M = m(x x M ). y + = 4 (x 3) 3 PTS: 4 REF: ge STA: G.G.68 TOP: Perpendicular Bisector 36 ANS: PTS: 4 REF: ge STA: G.G.3 TOP: Locus 37 ANS: D ( 1,1), E ( 1,5), G ( 4,5) PTS: 4 REF: ge STA: G.G.55 TOP: Properties of Transformations 5

14 ID: A 38 ANS: FE FE (Reflexive Property); AE FE FC EF (Line Segment Subtraction Theorem); AF CE (Substitution); BFA DEC (All right angles are congruent); BFA DEC (AAS); AB CD and BF DE (CPCTC); BFC DEA (All right angles are congruent); BFC DEA (SAS); AD CB (CPCTC); ABCD is a parallelogram (opposite sides of quadrilateral ABCD are congruent) PTS: 6 REF: ge STA: G.G.7 TOP: Quadrilateral Proofs 6

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