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untitled Name: 1. Date: Which statement is true about every parallelogram? A. All four sides are congruent. B. The interior angles are all congruent. C. Two pairs of opposite sides are congruent. 4. In the diagram below, ^A0 B0 C0 is a transformation of ^ABC, and ^A00 B00 C00 is a transformation of ^A0 B0 C0 . D. The diagonals are perpendicular to each other. 2. In the diagram below of quadrilateral ABCD, AB k CD, OABC = OCDA, and diagonal AC is drawn. The composite transformation of ^ABC to ^A00 B00 C00 is an example of a Which method can be used to prove that ^ABC is congruent to ^CDA? A. 3. AAS B. SSA C. SAS D. SSS What is the length of BD ? 5 B. 9 C. 3 re ection followed by a rotation B. re ection followed by a translation C. translation followed by a rotation D. translation followed by a re ection In the diagram below of right triangle ABC, CD is the altitude to hypotenuse AB, CB = 6, and AD = 5. A. A. D. 4 page 1 5. In the diagram below, line p intersects line m and line n. 8. Which value of x would make lines n and m parallel? If mO1 = 7x and mO 2 = 5x + 30, lines m and n are parallel when x equals A. 6. 12.5 B. 15 C. 87.5 A. D. 105 9. In the diagram below, parallelogram ABCD has diagonals AC and BD that intersect at point E. 10. Which expression is not always true? 7. A. ODAE = OBCE B. C. AC = DB D. DE = EB ODEC = OBEA rhombus B. C. parallelogram D. isosceles trapezoid 110 B. 80 C. 70 D. 50 The coordinates of point A are ( 3a; 4b). If point A0 is the image of point A re ected over the line y = x, the coordinates of A0 are A. (4b; 3a) B. (3a; 4b) C. ( 3a; 4b) D. ( 4b; 3a) The diagonals of a quadrilateral are congruent but do not bisect each other. This quadrilateral is A. an isosceles trapezoid B. a parallelogram C. a rectangle D. a rhombus Which quadrilateral has diagonals that always bisect its angles and also bisect each other? A. In the diagram below, lines n and m are cut by transversals p and q. 11. rectangle The angles of triangle ABC are in the ratio of 8 : 3 : 4. What is the measure of the smallest angle? A. page 2 12 B. 24 C. 36 D. 72 untitled 12. In the diagram below of rhombus ABCD, mOC = 100. 14. In the diagram below, point P is the centroid of ^ABC. If PM = 2x + 5 and BP of PM? What is mODBC? A. 13. 40 B. 45 A. C. 50 D. 80 15. The diagram below shows a pair of congruent triangles, with OADB = OCDB and OABD = O CBD. 16. 9 B. 2 7x + 4, what is the length C. 18 D. 27 Which gure has 60 rotational symmetry? A. square B. regular pentagon C. equilateral triangle D. regular hexagon In the diagram below of, ABCD, AC = BD Using this information, it could be proven that Which statement must be true? A. OADB + OCBD B. C. AB = CD D. AD = CD A. BC = AB C. AD BC = CD B. AB = CD D. AB + CD = AD OABC + OADC page 3 untitled 17. In the diagram below, under which transformation is ^A0 B0 C0 the image of ^ABC ? 19. In the diagram of trapezoid ABCD below, AB k DC, AD = BC, mOA = 4x + 20, and mOC = 3x 15. What is mOD ? A. 20. 18. A. D2 C. ry B. 2; y) 1 CB 2 C. AD DE = DC CB B. 60 D. 90 120 B. 100 C. 90 D. 60 ! ! In the accompanying diagram, AB and CD intersect at E. Angles AEC and DEB measure 2x 6 and 6x 50, respectively. Find the value of x. 22. If the three angles of a triangle are represented by (x + 30) , (4x + 30) , and (10x 30) , the triangle must be If DE joins the midpoints of ADC and AEB, which statement is not true? DE = C. 21. Triangle ABC is shown in the diagram below. A. 35 axis D. (x; y) ! (x axis B. What is the rotational symmetry of an equilateral triangle? A. rx 25 DE k CB D. ^ABC 23. ^AED A. obtuse B. isosceles C. right D. scalene In the accompanying diagram, OACD is an exterior angle of ^ABC, mOA = 3x, mOACD = 5x, and mOB = 50. What is the value of x ? A. 25 B. 30 C. 60 D. 100 page 4 untitled 24. The measures of two consecutive angles of a parallelogram are in the ratio 5:4. What is the measure of an obtuse angle of the parallelogram? A. 25. 20 B. 80 C. 100 30. In the diagram below of ^ABC, side BC is extended to point D, mOA = x, mOB = 2x + 15, and mOACD = 5x + 5. D. 160 ! ! In the accompanying diagram, AGB k CED, mOAGF = 30, and mOCEF = 45. What is mOGFE ? A. 45 B. 52 C. 60 D. 75 What is mOB ? 26. The expression radical form is A. p 5 2 B. p 72 p 3 6 p 3 2 written in simplest C. p 3 2 p D. 6 27. In the diagram below of ^ACD, B is a point on AC such that ^ADB is an equilateral triangle, and ^DBC is an isosceles triangle with DB = BC. Find mOC. 28. A quadrilateral whose diagonals are always congruent is a 29. A. A. parallelogram B. C. rhombus D. trapezoid 5 B. 20 C. 25 D. 55 31. If two angles are supplementary and one angle is twice as large as the other, nd the number of degrees in the measure of the smaller angle. 32. In the diagram below, ^ABC and ^XYZ are graphed. rectangle Use the properties of rigid motions to explain why ^ABC = ^XYZ. The measures of two complementary angles are represented by x + 5 and 4x 15. Find the value of x. page 5 untitled 33. In the diagram below of ^GJK, H is a point on GJ, HJ = JK , mOG = 28, and mOGJK = 70. Determine whether OGHK is an isosceles triangle and justify your 36. Using a compass and straightedge, construct a line perpendicular to AB through point P. 34. On the diagram below, use a compass and straightedge to construct the bisector of OXYZ. 37. Construct equilateral triangle ABC using line segment AB as one side. [Leave all construction marks.] A 38. B Given: AD bisects BC at E. AB ? BC DC ? BC Prove: AB = DC 35. Construct the median to side AC in ^ABC. page 6 untitled