Preparing for the Regents Examination Geometry, AK

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Part IV For each question, use the specific criteria to award a maximum of 6 credits. 18 Score Explanation 6 2. If two sides are congruent, the triangle is isosceles. 3. Base angles of isosceles triangles are congruent. 4. Exterior angle of a triangle is greater than either nonadjacent interior angle. 5. Substitution postulate. 6. Longest side of a triangle is opposite the angle with the largest measure. 5 One reason is faulty or missing. 4 Two reasons are faulty or missing. 3 Three reasons are faulty or missing. 2 More than three reasons are faulty or missing. 0 A zero response is completely incorrect, irrelevant, or incoherent or is a correct response that was obtained by an obviously incorrect procedure. Check students’ graphs. The coordinates are listed below. 19 Score Explanation 1 a A(6, 6), B(12, 6), C(6, 15) 2 b A(6, 6), B(12, 6), C(6, 15) 2 c A(6, 4), B(6, 10), C(15, 4) 1 d D 3 0 A zero response is completely incorrect, irrelevant, or incoherent or is a correct response that was obtained by an obviously incorrect procedure. 20 Score Explanation 1 a Student graphs points A and B correctly. 3 b x 4 and an appropriate explanation is given. Student graphs point C correctly. 2 c 0, and an appropriate explanation is given. 1 Correct answers for b and c, but no explanation is given. 0 A zero response is completely incorrect, irrelevant, or incoherent or is a correct response that was obtained by an obviously incorrect procedure. Chapters 1–8 115
Chapters 1–9 (pages 461–463) Part I Allow a total of 20 credits, 2 credits for each of the following correct answers. Allow credit if the student has written the correct answer instead of the numeral 1, 2, 3, or 4. 1 (3) right 2 (4) −− 6 (1) 34 AE bisects BAC. 7 (3) SSS 3 (4) 4, 5, 6 8 (1) 290 4 (1) (5, 3) 9 (3) 3,600 5 (2) congruent 10 (1) 30 Part II For each question, use the specific criteria to award a maximum of 2 credits. 11 Score Explanation 2 x is divisible by 2, and an appropriate explanation is given. 1 x is divisible by 2, but no explanation is given. 0 A zero response is completely incorrect, irrelevant, or incoherent or is a correct response that was obtained by an obviously incorrect procedure. 12 Score Explanation 2 155, and an appropriate explanation is given. 1 155, but no explanation is given. 0 A zero response is completely incorrect, irrelevant, or incoherent or is a correct response that was obtained by an obviously incorrect procedure. 13 Score Explanation 2 (9, 2), and an appropriate explanation is given. 1 (9, 2), but no explanation is given. 0 A zero response is completely incorrect, irrelevant, or incoherent or is a correct response that was obtained by an obviously incorrect procedure. 14 Score Explanation 2 (4, 2), and an appropriate explanation is given. 1 (4, 2), but no explanation is given. 0 A zero response is completely incorrect, irrelevant, or incoherent or is a correct response that was obtained by an obviously incorrect procedure. 116 Cumulative Reviews
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ANSWER KEY Preparing for the REGENT
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Contents Chapter 1: Essentials of G
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1-4 Angles (pages 9-10) 1 (4) It is
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6 True 7 True 8 True 9 True 10 Answ
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3 1. e ∨ ~f 2. ~f → g 3. ~e 4.
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CHAPTER 3 3-1 Inductive Reasoning (
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6. BAC DAE 6. Transitive property.
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CHAPTER 4-1 Setting Up a Valid Proo
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6 Given: BA bisects CBE 1 2 2 4
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1 1. −−−− ABCD 2. 1 2 3. _
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18 1. I is the midpoint of −− E
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5-3 Isosceles and Equilateral Trian
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12. −−− HG −−− DC 13.
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5 1. −− FG is the perpendicular
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Chapter Review (pages 84-85) Note:
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20 Use constructing congruent angle
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6-3 Line Reflections and Symmetry (
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11 A(0, 8), B(2, 2), C(6, 4) (8) 10
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5 (3) (x, y) → (x, 2y) 6 (1) tran
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11. mABC mADC 12. 2mABD 2mADB 13.
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6. mDAB mCAD mDCB mACD 7. mCAB
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g e 17 a _ f d b Undefined c a _
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5 BIG is isosceles because it has t
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___ 27 a M KA (5, 1), M ___ AT (4
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8 106 9 mA 75, mC 67 10 57 11 60
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9-5 The Sum of the Measures of the
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9-7 The Converse of the Isosceles T
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12 1. ___ CE ___ BA , ___ BD ___
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12 a mx 45, my 45 b mx 98, my 8
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Quadrilaterals 10-2 The Parallelogr
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7. MAD RCB 8. MAD RCB (SAS SAS)
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5. RSQ TSV (Vertical angles) 6. QR
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3 4x 2 3x 3 x 5 RS 18 4 Perime
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Page 69 and 70: 28 Enclose PAT in a large rectangle
Page 71 and 72: Geometry of Three Dimensions 11-1 P
Page 73 and 74: 11-6 Volume of a Prism (pages 269-2
Page 75 and 76: 14 47.5 in. 2 15 h 4 in. 16 25 cm
Page 77 and 78: 14 a 3 : 2 b QR 10, RS 20, ST 12
Page 79 and 80: 4. A A 5. ADE ABC b (AA) AC _ AB
Page 81 and 82: 12 7 √ 2 13 4 14 5 √ 3 15 x
Page 83 and 84: 13-2 Arcs and Chords (pages 350-351
Page 85 and 86: 27 1. Common external tangents, −
Page 87 and 88: 8. mHCT 1 _ m 2 TH mCHT 1 _ CT 2
Page 89 and 90: 16 a (2 √ 2 , 2 √ 2 ), (2 √
Page 91 and 92: 15 a Use constructing a congruent a
Page 93 and 94: 5 Two horizontal lines y 11 and y
Page 95 and 96: Each review has a total of 58 possi
Page 97 and 98: Part III For each question, use the
Page 99 and 100: Chapters 1-3 (pages 438-441) Part I
Page 101 and 102: Part IV For each question, use the
Page 103 and 104: 16 Score Explanation 4 a 91, b 35
Page 105 and 106: Chapters 1-5 (pages 446-449) Part I
Page 109 and 110: 20 Score Explanation 6 The followin
Page 113 and 114: Part II For each question, use the
Page 117: Part III For each question, use the
Page 123 and 124: 12 Score Explanation 2 31, and an a
Page 127 and 128: 16 Score Explanation 4 DN √ 106
Page 129 and 130: 20 Score Explanation 2 a 3, and an
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Page 135 and 136: 16 Score Explanation 4 mADE 93, mB
Page 137 and 138: 20 Score Explanation Chapters 1-14
Page 141 and 142: Practice Regents Examination One (p
Page 143 and 144: 36 Score Explanation 4 36, and an a
Page 145 and 146: 32 Score Explanation 2 108, and an
Page 147 and 148: Part II For each question, use the
Page 149: Part IV For each question, use the
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Preparing for the Regents Examination Geometry, AK

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