# The University of the State of New York REGENTS HIGH SCHOOL EXAMINATION GEOMETRY. Wednesday, January 28, :15 a.m. to 12:15 p.m.

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2 Part I Answer all 28 questions in this part. Each correct answer will receive 2 credits. No partial credit will be allowed. For each statement or question, choose the word or expression that, of those given, best completes the statement or answers the question. Record your answers on your separate answer sheet. [56] 1 What is the solution of the system of equations graphed below? y 2x 1 y x 2 2x 3 Use this space for computations. y x (1) (0,3) (3) (3,0) and (1,0) (2) (1,4) (4) (2,3) and (2,5) 2 What are the coordinates of the midpoint of the line segment with endpoints (2,5) and (8,3)? (1) (3,4) (3) (5,4) (2) (3,1) (4) (5,1) Geometry Jan. 15 [2]

3 3 As shown in the diagram below, when hexagon ABCDEF is reflected over line m, the image is hexagon ABCDEF. Use this space for computations. A B B A F C C F E D D E m Under this transformation, which property is not preserved? (1) area (3) orientation (2) distance (4) angle measure 4 In the diagram of ABC below, BD is drawn to side AC. If m A 35, m ABD 25, and m C 60, which type of triangle is BCD? (1) equilateral (3) obtuse (2) scalene (4) right Geometry Jan. 15 [3] [OVER]

4 5 In the diagram below of rhombus ABCD, the diagonals AC and BD intersect at E. A B Use this space for computations. E D C If AC 18 and BD 24, what is the length of one side of rhombus ABCD? (1) 15 (3) 24 (2) 18 (4) 30 6 What are the truth values of the statement Opposite angles of a trapezoid are always congruent and its negation? (1) The statement is true and its negation is true. (2) The statement is true and its negation is false. (3) The statement is false and its negation is true. (4) The statement is false and its negation is false. 7 What is the length of a line segment whose endpoints have coordinates (5,3) and (1,6)? (1) 5 (3) 17 (2) 25 (4) 29 Geometry Jan. 15 [4]

5 8 In the diagram below of isosceles ABC, the measure of vertex angle B is 80. If AC extends to point D, what is m BCD? Use this space for computations. B A C D (1) 50 (3) 100 (2) 80 (4) A student used a compass and a straightedge to construct CE in ABC as shown below. A E B C Which statement must always be true for this construction? (1) CEA CEB (3) AE BE (2) ACE BCE (4) EC AC 10 In ABC, AB 4, BC 7, and AC 10. Which statement is true? (1) m B m C m A (3) m C m B m A (2) m B m A m C (4) m C m A m B Geometry Jan. 15 [5] [OVER]

6 11 A circle whose center has coordinates (3,4) passes through the origin. What is the equation of the circle? (1) (x 3) 2 (y 4) 2 5 (2) (x 3) 2 (y 4) 2 25 (3) (x 3) 2 (y 4) 2 5 (4) (x 3) 2 (y 4) 2 25 Use this space for computations. 12 Point W is located in plane R. How many distinct lines passing through point W are perpendicular to plane R? (1) one (3) zero (2) two (4) infinite 13 In the diagram below, line is parallel to line m, and line w is a transversal. w m (Not drawn to scale) If m 2 3x 17 and m 3 5x 21, what is m 1? (1) 19 (3) 74 (2) 23 (4) 86 Geometry Jan. 15 [6]

7 14 The diagram below is a graph of circle O. Use this space for computations. y x O Which equation represents circle O? (1) (x 5) 2 (y 3) 2 4 (2) (x 5) 2 (y 3) 2 4 (3) (x 5) 2 (y 3) 2 16 (4) (x 5) 2 (y 3) In isosceles trapezoid QRST shown below, QR and TS are bases. T S Q R If m Q 5x 3 and m R 7x 15, what is m Q? (1) 83 (3) 16 (2) 48 (4) 9 Geometry Jan. 15 [7] [OVER]

8 16 Triangle ABC is graphed on the set of axes below. Use this space for computations. y B A x C What are the coordinates of the point of intersection of the medians of ABC? (1) (1,2) (3) (0,2) (2) (3,2) (4) (1,2) 17 Given the statement, If a number has exactly two factors, it is a prime number, what is the contrapositive of this statement? (1) If a number does not have exactly two factors, then it is not a prime number. (2) If a number is not a prime number, then it does not have exactly two factors. (3) If a number is a prime number, then it has exactly two factors. (4) A number is a prime number if it has exactly two factors. Geometry Jan. 15 [8]

9 18 Which graph represents a circle whose equation is (x 2) 2 (y 4) 2 4? Use this space for computations. y y x x (1) (3) y y x x (2) (4) 19 If two sides of a triangle have lengths of 4 and 10, the third side could be (1) 8 (3) 16 (2) 2 (4) 4 Geometry Jan. 15 [9] [OVER]

10 20 The lines represented by the equations 4x 6y 6 and y 2 3 x 1 are Use this space for computations. (1) parallel (2) the same line (3) perpendicular (4) intersecting, but not perpendicular 21 In the diagram below of ABC, DE AB. If CD 4, CA 10, CE x 2, and EB 4x 7, what is the length of CE? (1) 10 (3) 6 (2) 8 (4) 4 Geometry Jan. 15 [10]

11 22 Parallelogram ABCD with diagonals AC and BD intersecting at E is shown below. Use this space for computations. A B E D C Which statement must be true? (1) BE CE (3) AB BC (2) BAE DCE (4) DAE CBE 23 In the diagram below of circle O, m ABC 24. A O C B What is m AOC? (1) 12 (3) 48 (2) 24 (4) Triangle ABC is the image of ABC after a dilation of 2. Which statement is true? (1) AB AB (3) m B m B (2) BC 2(BC) (4) m A 1 2 (m A) Geometry Jan. 15 [11] [OVER]

12 25 In the diagram of the circle below, AD BC, AB CD (9x 10). (5x 30), and Use this space for computations. D A C B What is m AB? (1) 5 (3) 55 (2) 10 (4) The bases of a prism are right trapezoids, as shown in the diagram below. Which two edges do not lie in the same plane? (1) BC and WZ (3) DC and WX (2) AW and CY (4) BX and AB Geometry Jan. 15 [12]

13 27 In the diagram below, AB is the image of AB under which single transformation? Use this space for computations. y A B B x A (1) dilation (3) translation (2) rotation (4) glide reflection 28 For which diagram is the statement ABC ~ ADE not always true? A E B D (1) E C D (3) A B C C D C D A A B E B E (2) (4) Geometry Jan. 15 [13] [OVER]

14 Part II Answer all 6 questions in this part. Each correct answer will receive 2 credits. Clearly indicate the necessary steps, including appropriate formula substitutions, diagrams, graphs, charts, etc. For all questions in this part, a correct numerical answer with no work shown will receive only 1 credit. All answers should be written in pen, except for graphs and drawings, which should be done in pencil. [12] 29 Given: BE and AD intersect at point C BC EC AC DC AB and DE are drawn Prove: ABC DEC D B C E A Geometry Jan. 15 [14]

15 30 Using a compass and straightedge, construct the perpendicular bisector of side AR in ART shown below. [Leave all construction marks.] A R T Geometry Jan. 15 [15] [OVER]

16 31 Determine and state the measure, in degrees, of an interior angle of a regular decagon. Geometry Jan. 15 [16]

17 32 Write an equation of a line that is parallel to the line whose equation is 3y x 6 and that passes through the point (3,4). Geometry Jan. 15 [17] [OVER]

18 33 In the diagram below, secants PQR and PST are drawn to a circle from point P. Q P R S T If PR 24, PQ 6, and PS 8, determine and state the length of PT. Geometry Jan. 15 [18]

19 34 The slope of QR is x 1 4 and the slope of ST is 8 3. If QR ST, determine and state the value of x. Geometry Jan. 15 [19] [OVER]

20 Part III Answer all 3 questions in this part. Each correct answer will receive 4 credits. Clearly indicate the necessary steps, including appropriate formula substitutions, diagrams, graphs, charts, etc. For all questions in this part, a correct numerical answer with no work shown will receive only 1 credit. All answers should be written in pen, except for graphs and drawings, which should be done in pencil. [12] 35 Quadrilateral HYPE has vertices H(2,3), Y(1,7), P(2,7), and E(2,4). State and label the coordinates of the vertices of HYPE after the composition of transformations r x-axis T 5,3. [The use of the set of axes below is optional.] y x Geometry Jan. 15 [20]

21 36 On the set of axes below, graph two horizontal lines whose y-intercepts are (0,2) and (0,6), respectively. Graph the locus of points equidistant from these horizontal lines. Graph the locus of points 3 units from the y-axis. State the coordinates of the points that satisfy both loci. y x Geometry Jan. 15 [21] [OVER]

22 37 In the diagram below, a right circular cone with a radius of 3 inches has a slant height of 5 inches, and a right cylinder with a radius of 4 inches has a height of 6 inches Determine and state the number of full cones of water needed to completely fill the cylinder with water. Geometry Jan. 15 [22]

23 Part IV Answer the question in this part. A correct answer will receive 6 credits. Clearly indicate the necessary steps, including appropriate formula substitutions, diagrams, graphs, charts, etc. A correct numerical answer with no work shown will receive only 1 credit. The answer should be written in pen, except for graphs and drawings, which should be done in pencil. [6] 38 In the diagram below, right triangle RSU is inscribed in circle O, and UT is the altitude drawn to hypotenuse RS. The length of RT is 16 more than the length of TS and TU 15. Find the length of TS. Find, in simplest radical form, the length of RU. S O T R U Geometry Jan. 15 [23]

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27 Reference Sheet Tear Here Cylinder V Bh where B is the area of the base Volume Pyramid Right Circular Cone V 1 Bh 3 where B is the area of the base V 1 Bh 3 where B is the area of the base Sphere V 4 r 3 3 Lateral Area (L) Right Circular Cylinder Right Circular Cone L 2rh L rl where l is the slant height Surface Area Sphere SA 4r 2 Tear Here Geometry Jan. 15

28 Tear Here Tear Here

29 Tear Here Tear Here Scrap Graph Paper This sheet will not be scored.

30 Scrap Graph Paper This sheet will not be scored. Tear Here Tear Here

31

32 GEOMETRY Printed on Recycled Paper GEOMETRY

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