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Geometry Honors 2010–2011 Semester 1 Exam — Released Note: Diagrams on this exam are not necessarily drawn to scale. 3. In the diagram, mLMN 54 . BEGIN PART I (50 questions) L 1. Use the diagram. 5 4 P 2x 10 1 3 2 2x M N Which best describes the pair of angles 1 and 4 ? What is the value of x? (A) 27 (A) complementary (B) 22 (B) linear pair (C) 16 (C) supplementary (D) 11 (D) vertical 4. In the diagram, Y is between X and Z, and XZ 36 centimeters. 2. Use the diagram. E 4b F X b+6 Y Z A B C What is the length of XY ? D (A) 24 cm Which best describes the pair of angles DBA and ABE ? (B) 12 cm (A) adjacent (D) 8 cm (C) 10 cm (B) linear pair (C) supplementary (D) vertical 2010–2011 Clark County School District 1 Revised 08/02/2011 GO ON Geometry Honors 2010–2011 Semester 1 Exam — Released Note: Diagrams on this exam are not necessarily drawn to scale. 5. What is the distance between points A 3, 12 and B 3, 4 ? 8. The lawyer presented all the facts of the case in a logical order to the judge. What type of reasoning did the lawyer use? (A) 14 (A) conjecture (B) 28 (B) deductive (C) 10 (C) inductive (D) 100 (D) intuitive 9. The teacher said, “If all the sides of a triangle are congruent, then it is an equilateral triangle.” A student replied, “If it is not an equilateral triangle, then all the sides are not congruent.” What type of statement did the student use? 6. What are the coordinates of the midpoint of AB with endpoints A 7, 2 and B 5, 6 ? (A) 1, 4 5 11 (B) , 2 2 (C) (A) biconditional (B) contrapositive 6, 2 (C) converse (D) inverse (D) 12, 4 10. What is the inverse of this statement? 7. In the pattern, the sides of each square have a length of 1 unit. If I am in my room, then I am happy. (A) I am in my room, if and only if I am happy. Figure 1 Figure 2 (B) If I am happy, then I am in my room. (C) If I am not happy, then I am not in my room. Figure 3 (D) If I am not in my room, then I am not happy. th What is the perimeter of the 6 figure? (A) 24 (B) 30 (C) 34 (D) 44 2010–2011 Clark County School District 2 Revised 08/02/2011 GO ON Geometry Honors 2010–2011 Semester 1 Exam — Released Note: Diagrams on this exam are not necessarily drawn to scale. 11. What is the converse of the statement? 13. In the diagram, line m is a transversal. If Grandpa lives in California, then he lives in the United States. m (A) If Grandpa lives in the United States, then he lives in California. 1 4 3 2 5 8 6 7 (B) Grandpa lives in California, if and only if he lives in the United States. (C) If Grandpa does not live in California, then he does not live in the United States. Which best describes the angle pair 4 and 8 ? (D) If Grandpa does not live in the United States, then he does not live in California. (A) supplementary (B) corresponding (C) alternate interior (D) alternate exterior 12. Which is a counterexample to the statement? 14. In the diagram, m n and t is a transversal. All planets have moons. m (A) The planet Jupiter has many moons. (B) The planet Mars has two moons. 2x 20 (C) The planet Mercury has no moons. n 40° t (D) The planet Saturn has many moons. What is the value of x? (A) 10 (B) 30 (C) 60 (D) 140 2010–2011 Clark County School District 3 Revised 08/02/2011 GO ON Geometry Honors 2010–2011 Semester 1 Exam — Released Note: Diagrams on this exam are not necessarily drawn to scale. 17. In order for lines m and n to be parallel, what statement must be true? 15. In the diagram, m n and p q . p q s r m 80° x° 1 3 2 m 4 n n 8 7 6 5 What is the value of x? (A) 1 and 8 are corresponding (A) 40 (B) 1 and 8 are complementary (B) 80 (C) 3 and 6 are congruent (C) 100 (D) 3 and 6 are supplementary (D) 160 18. Which is a valid classification of a triangle? 16. Use the diagram. (A) acute equilateral t 40° (B) obtuse equiangular 4y (C) right acute m (D) scalene isosceles n What value of y would show that line m was parallel to line n? (A) 50 (B) 40 (C) 35 (D) 10 2010–2011 Clark County School District 4 Revised 08/02/2011 GO ON Geometry Honors 2010–2011 Semester 1 Exam — Released Note: Diagrams on this exam are not necessarily drawn to scale. 19. Use the quadrilateral. 21. Use the triangles. 6x 7 x 10 5 x 5 85° What is the value of x? (A) 5 Which congruence postulate or theorem proves these two triangles are congruent? (B) 15 (C) 20 (A) angle-angle-side (AAS) (D) 25 (B) side-angle-side (SAS) 20. In the diagram, JKLMN RSTUV . (C) side-side-angle (SSA) (D) side-side-side (SSS) J 22. In the diagram, NK LM and 1 2 . K N T L U L N M S V 1 R K Which angle corresponds to M ? 2 M Which congruence postulate or theorem would prove LMK NKM ? (A) R (B) S (A) angle-side-angle (ASA) (C) T (B) side-angle-side (SAS) (D) U (C) side-side-angle (SSA) (D) side-side-side (SSS) 2010–2011 Clark County School District 5 Revised 08/02/2011 GO ON Geometry Honors 2010–2011 Semester 1 Exam — Released Note: Diagrams on this exam are not necessarily drawn to scale. 23. Given that JKL RST , JK 3z 21 , KL 2z 25 , LJ 21 3z , and ST 5z 31 , what is the value of z? 25. The statements for a proof are given below. Given: (A) 5 NO PM NO PM (B) 2 Prove: OP MN (C) 1 (D) 2 O 24. Given that PQR XYZ , mP 7n 5 , mQ 3n 5 , and P N mZ 30 . What is the value of n? M 4 (A) 3 7 (B) 11 Proof: 2 3 (C) 15 (D) 18 STATEMENTS REASONS 1. NO PM , NO PM 2. ONP MPN 1. Given 3. NP NP 4. MPN ONP 2. 3. 4. 5. OP MN 5. What reason makes the statement in Step 4 true? (A) side-angle-side (SAS) (B) side-side-side (SSS) (C) corresponding parts of congruent triangles are congruent (CPCTC) (D) angle-side-angle (ASA) 2010–2011 Clark County School District 6 Revised 08/02/2011 GO ON Geometry Honors 2010–2011 Semester 1 Exam — Released Note: Diagrams on this exam are not necessarily drawn to scale. 27. Given that DEF LMN , mF 4x 8 , mM 5x 7 , and 26. The statements for a proof are given below. Given: I is the midpoint of K G Prove: GH D x 15 , what is the value of x? GK (A) 1 KJ (B) 2 (C) 6 K H (D) 15 I 28. In triangle PQR, QP RP and mR 63 . J G P Proof: STATEMENTS REASONS 1. I is the midpoint of GK K G 2. HIG JIK 1. Given 3. GI KI 4. HIG JIK 5. GH KJ Q 2. 3. R What is the measure of P ? 4. 5. (A) 27° (B) 54° What is the reason for the 5th statement? (C) 63° (A) definition of a midpoint (D) 117° (B) angle-side-angle (ASA) (C) prove (D) corresponding parts of congruent triangles are congruent. (CPCTC) 2010–2011 Clark County School District 7 Revised 08/02/2011 GO ON Geometry Honors 2010–2011 Semester 1 Exam — Released Note: Diagrams on this exam are not necessarily drawn to scale. 29. Three towns form a triangle on the map. 32. Which list of three lengths would form a triangle? Jasper 34 miles (A) 4, 4, 7 18 miles Alta x (B) 4, 5, 10 Washington (C) 5, 6, 12 Which value of x is NOT a possible distance between Alta and Washington? (D) 6, 6, 12 33. BE is a median of ABC . (A) 10 miles (B) 20 miles A (C) 30 miles 8 (D) 40 miles 30. Given A 2, 5 and B 4, 2 . What is the distance from A to B? E 10 7 B C (A) 13 (B) 45 (C) 53 (B) 8 (D) 85 (C) 10 What is the length of AC ? (A) 6 (D) 14 31. In ABC , AB = 6 centimeters, BC = 9 centimeters, and CA = 5 centimeters. Which list shows the angles in order from largest to smallest? (A) B, C , A (B) B, A, C (C) A, B, C (D) A, C , B 2010–2011 Clark County School District 8 Revised 08/02/2011 GO ON Geometry Honors 2010–2011 Semester 1 Exam — Released Note: Diagrams on this exam are not necessarily drawn to scale. 34. In EFG , HI , IJ , and JH are midsegments, GJ = 6 centimeters, and EI = 8 centimeters. 36. How many sides does a decagon have? (A) 6 (B) 8 G (C) 10 6 cm H (D) 12 J 37. Which group of figures are all polygons? E 8 cm I F (A) What is the length of EF ? (A) 10 cm (B) (B) 14 cm (C) 16 cm (D) 20 cm (C) 35. Use the diagram. (D) 38. What is the sum of the measures of the interior angles of this polygon? What is the name of the point of concurrency in this triangle? (A) centroid (B) circumcenter (A) 360 (C) incenter (B) 540 (D) orthocenter (C) 720 (D) 1080 2010–2011 Clark County School District 9 Revised 08/02/2011 GO ON Geometry Honors 2010–2011 Semester 1 Exam — Released Note: Diagrams on this exam are not necessarily drawn to scale. 39. What is the sum of the exterior angles of a polygon? 42. Which statement is true? (A) All parallelograms have only one pair of parallel sides. (A) 180 (B) All parallelograms have complimentary consecutive angles. (B) 360 (C) 540 (C) All parallelograms have diagonals that bisect each other. (D) 720 (D) All parallelograms have four congruent sides. 40. The figure below is a rhombus. 43. Which statement is true about all isosceles trapezoids? 5x + 45 (A) Both pairs of opposite sides are congruent. 7x + 15 What is the value of x? (B) Both pairs of opposite sides are parallel. (A) 2.5 (C) One pair of opposite sides is both parallel and congruent. (B) 10 (C) 15 (D) One pair of opposite sides is parallel, and the other pair is congruent. (D) 30 41. What is the measure of each exterior angle of a regular decagon? (A) 36° (B) 45° (C) 135° (D) 144° 2010–2011 Clark County School District 10 Revised 08/02/2011 GO ON Geometry Honors 2010–2011 Semester 1 Exam — Released Note: Diagrams on this exam are not necessarily drawn to scale. 44. In the diagram, BCA XZY . Which statement must be true? X 46. A regular polygon has interior angles that measure 135 . How many sides does this polygon have? Z 120° (A) 4 (B) 6 40° (C) 8 Y B (D) 10 47. Use the diagram. 10 cm 8cm C A 93° x° (A) mX 40 (B) XY 8cm 56° 91° (C) XZ 8cm (D) ZY 8cm What is the value of x? (A) 120 45. Figure GHIJ is a parallelogram. G (B) 128 H 2x 25 (C) 180 (D) 240 J x 35 I What is the value of x? (A) 10 (B) 40 (C) 60 (D) 80 2010–2011 Clark County School District 11 Revised 08/02/2011 GO ON Geometry Honors 2010–2011 Semester 1 Exam — Released Note: Diagrams on this exam are not necessarily drawn to scale. 48. Given that FGH is an equilateral triangle, what is the measure of an acute angle of the triangle? (A) 45° (B) 60° (C) 90° (D) 120° 49. Using the table, what is the nth term of the sequence? 1 4 2 8 3 12 4 16 … … n ? (A) n 4 (B) 3n 2 (C) 4n (D) 4n 3 50. Austin went to track practice after school on Monday, Tuesday, and Wednesday. Using inductive reasoning, what conclusion can you make about his Thursday after-school activity? (A) Austin will go home. (B) Austin will go to swim practice. (C) Austin will go to a meeting. (D) Austin will go to track practice. END PART I GO ON TO PART II 2010–2011 Clark County School District 12 Revised 08/02/2011 GO ON Geometry Honors 2010–2011 Semester 1 Exam — Released Note: Diagrams on this exam are not necessarily drawn to scale. 3. UV has an endpoint at U 7, 5 , and the BEGIN PART II (10 questions) midpoint is at M 2, 1 . What are the coordinates of endpoint V? 1. In EFG, H , I , and J are midpoints. G H E (A) 12, 10 (B) 4, 3 (C) 3, 3 (D) 4, 5 J K F I 4. Rectangle MHRG has vertices M 5, 2 , H 1, 10 , R 5, 7 , and If GI = 36, what is KG? (A) 6 G 1, 1 . What is the length of diagonal (B) 12 MR ? (C) 18 (D) 24 2. Based on the dimensions given in the diagram, what is the longest line segment in the diagram? (A) 15 (B) 81 (C) 125 (D) 181 P R Q 70° 55° 5. In an indirect proof, after assuming the opposite of the “Proof Statement” (conclusion), the next step in the process is to 55° 65° 60° 55° 80° T 60° (A) find a contradiction 40° (B) prove the false assumption S (C) prove the given information (A) QS (D) use CPCTC (B) RS (C) TQ (D) TS 2010–2011 Clark County School District 13 Revised 08/02/2011 GO ON Geometry Honors 2010–2011 Semester 1 Exam — Released Note: Diagrams on this exam are not necessarily drawn to scale. 8. The nth term of a sequence is 3n 1 . If the value of a term is 400, what is the next term? 6. To begin an indirect proof, an initial assumption is made. If one were trying to prove that x = 9, what should be the initial assumption? 2 (A) x = 9 (A) 8 (B) x < 9 (B) 289 (C) x > 9 (C) 409 (D) x 9 (D) 529 9. Given points A 4, 16 and B x, 4 , what is a possible value of x if the length of AB is 13? 7. In the diagram, which coordinates would result in a kite? (A) –5 (B) –1 (C) 5 (D) 12 10. In isosceles triangle HMS, M is the vertex angle. If mM 2 x 3 and mH 9 x 7 , what is mM ? (A) 10° (A) 10, 1 (B) 22° (B) 9, 2 (C) 79° 7, 11 (D) 80° (C) (D) 6, 5 2010–2011 Clark County School District END PART II 14 Revised 08/02/2011 GO ON Geometry Honors 2010–2011 Semester 1 Exam — Released Free Response 1. This question obsolete as of 2011–2012. See new test specifications and practice questions. 2. This question obsolete as of 2011–2012. See new test specifications and practice questions. 3. This question obsolete as of 2011–2012. See new test specifications and practice questions. 2010–2011 Clark County School District 1 Revised 08/02/2011 GO ON