Parallel Lines Chapter Problems
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1 Parallel Lines Chapter Problems Lines: Intersecting, parallel & skew Class Work Use image 1 1. Name all segments parallel to GH : 2. Name all segments skew to GH : 3. Name all segments intersecting with GH : 4. Are segments GH and BA coplanar? Explain your answer. 5. Are segments GH and BF coplanar? Explain your answer. Is each statement true always, sometimes, or never? 6. Two intersecting lines are skew. 7. Two parallel lines are coplanar. 8. Two lines in the same plane are parallel. 9. Two lines that do not intersect are parallel. 10. Two skew lines are coplanar Lines: Intersecting, parallel & skew Homework -Use Image Name all segments parallel to FE : 12. Name all segments skew to FE : 13. Name all segments intersecting with FE : 14. Are segments FE and CD coplanar? Explain your answer. 15. Are segments FE and HD coplanar? Explain your answer. Image 1 State whether the following statements are always, sometimes, or never true: 16. Two coplanar lines are skew. 17. Two intersecting lines are in the same plane. 18. Two lines in the same plane are parallel. Lines & Transversals Classify each pair of angles as alternate interior, alternate exterior, same-side interior, sameside exterior, corresponding angles, or none of these and 16 are and 2 are and 8 are and 16 are and 14 are and 16 are Geometry Parallel Lines ~1~ NJCTL.org
2 Classify each pair of angles as alternate interior, alternate exterior, same-side interior, sameside exterior, corresponding angles, or none of these and and and and and and and and 10 Parallel Lines & Proofs Classwork Match each expression/equation with the property used to make the conclusion. 33. AB = AB 34. If m A = m B and m B = m C, then m A = m C. 35. If x + y = 9 and y = 5, then x + 5 = If DE = FG, then FG = DE. a) Substitution Property of Equality b) Transitive Property of Equality c) Reflexive Property of Equality d) Symmetric Property of Equality PARCC type question: 37. Alternate Exterior Angles Proof: Complete the proof by filling in the missing reasons with the reasons bank below. Given: line m line k Prove: 2 8 Statements Reasons 1. line m line k Reasons Bank a) Transitive Property of Congruence b) If 2 parallel lines are cut by a transversal, then the corresponding angles are congruent. c) Vertical Angles are congruent. d) Given Geometry Parallel Lines ~2~ NJCTL.org
3 PARCC type question: 38. Same-Side Interior Angles Proof: Complete the proof by filling in the missing reasons with the reasons bank below. Some reasons may be used more than once. Given: line m line k Prove: 5 & 4 are supplementary Statements Reasons 1. line m line k m 1 = m & 4 are supplementary m 1 + m 4 = m 5 + m 4 = & 4 are supplementary 7. Reasons Bank a) Angles that form a linear pair are supplementary. b) Substitution Property of Equality c) Definition of supplementary angles d) If 2 parallel lines are cut by a transversal, then the corresponding angles are congruent. e) Definition of congruent angles f) Given Parallel Lines & Proofs Homework For #39-42 match the description on the left to the name of the property on the right. 39. A B and B C, then A C. a) Substitution Property of Equality 40. If bc = 77 and b = 11, then 11c = 77. b) Transitive Property of Congruence 41. If P M, then M P. c) Reflexive Property of Equality 42. QR = QR d) Symmetric Property of Congruence PARCC type question: Geometry Parallel Lines ~3~ NJCTL.org
4 43. Alternate Interior Angles Proof: Complete the proof by filling in the missing reasons with the reasons bank below. Given: line m line k Prove: 3 5 Statements Reasons 1. line m line k Reasons Bank a) Vertical Angles are congruent. b) Given c) Transitive Property of Congruence d) If 2 parallel lines are cut by a transversal, then the corresponding angles are congruent. Geometry Parallel Lines ~4~ NJCTL.org
5 PARCC type question: 44. Same-Side Exterior Angles Proof: Complete the proof by filling in the missing reasons with the reasons bank below. Some reasons may be used more than once. Given: line m line k Prove: 1 & 8 are supplementary Statements Reasons 1. line m line k m 1 = m & 8 are 4. supplementary 5. m 5 + m 8 = m 1 + m 8 = & 8 are 7. supplementary Reasons Bank a) Definition of supplementary angles b) If 2 parallel lines are cut by a transversal, then the corresponding angles are congruent. c) Given d) Definition of congruent angles e) Angles that form a linear pair are supplementary. f) Substitution Property of Equality Properties of Parallel Lines Classwork Use the given diagram to answer problems # m 1= 46. m 2= 47. m 4= 48. m 5= 49. m 15= If m 9 = 54, then find the measure the following angles: Geometry Parallel Lines ~5~ NJCTL.org
6 If m 2 = (12x-54) and m 10 = (7x+26), then find the measure the following angles: 50.m 6= 51. m 11= 52. m 9= 53. m 16= Find the values of the unknown variables in each figure. (# 54-58) Geometry Parallel Lines ~6~ NJCTL.org
7 Find measure of the following angles: 59. m 1= 60. m 2= 61. m 3= 62. m 4= 63. m 5= State which segments (if any) are parallel Solve for the unknowns Geometry Parallel Lines ~7~ NJCTL.org
8 Properties of Parallel Lines Homework If m 9 = 62, then find the measure the following angles: 69. m 1= 70. m 2= 71. m 4= 72. m 5= 73. m 15= If m 2 = (14x-24) and m 10 = (6x+72), then find the measure the following angles: 74. m 6= 75. m 11= 76. m 9= 77. m 16= Find the values of the unknown variables in each figure. (#78-82) Geometry Parallel Lines ~8~ NJCTL.org
9 Find measure of the following angles: 83. m 1= 84. m 2= 85. m 3= 86. m 4= 87. m 5= State which segments (if any) are parallel. 88. D 124 C A 124 B Geometry Parallel Lines ~9~ NJCTL.org
10 Constructing Parallel Lines Class Work 93. Construct a line m that is parallel to line l that passes thru point C using the stated method. Corresponding Angles 94. Error Analysis: A person was constructing the line n thru point D such that it was parallel to line l using the alternate interior angles method. Using their markings, state their mistake. 95. Use paper- folding techniques to construct parallel lines. Geometry Parallel Lines ~10~ NJCTL.org
11 Constructing Parallel Lines Homework 96. Error Analysis: A person was constructing the line n thru point D such that it was parallel to line l using the alternate exterior angles method. Using their markings, state their mistake. 97. Construct parallel lines using a straightedge and compass using alternate interior angles. 98. Construct parallel lines using a straightedge and compass using alternate exterior angles. Geometry Parallel Lines ~11~ NJCTL.org
12 PARCC type question: 99. The figure shows line j, points C and B are on line j, and point A is not on line j. Also shown is line AB. A j C B Part A: A F j C G B Consider the partial construction of a line parallel to j through point A. What would be the final step in the construction? a) Draw a line through points B and F b) Draw a line through points C and F c) Draw a line through points A and F d) Draw a line through points A and G Part B: Once the construction is complete, which of the following reasons listed contribute to providing the validity of the construction? a) If two parallel lines are cut by a transversal, then the corresponding angles are congruent. b) If two parallel lines are cut by a transversal, then the alternate exterior angles are congruent. c) If two parallel lines are cut by a transversal, then the same-side interior angles are supplementary. d) If two parallel lines are cut by a transversal, then the alternate interior angles are congruent. Geometry Parallel Lines ~12~ NJCTL.org
13 PARCC type question: 100. The figure shows line p; points H, K, and M are on line p, and point J is not on line p. Also shown is line JK. J p H K M Part A: N J p H K M Consider the partial construction of a line parallel to p through point J. What would be the final step in the construction? a) Draw a line through points K and N b) Draw a line through points J and N c) Draw a line through points H and N d) Draw a line through points M and M Part B: Once the construction is complete, which of the following reasons listed contribute to providing the validity of the construction? a) If two parallel lines are cut by a transversal, then the corresponding angles are congruent. b) If two parallel lines are cut by a transversal, then the alternate exterior angles are congruent. c) If two parallel lines are cut by a transversal, then the same-side interior angles are supplementary. d) If two parallel lines are cut by a transversal, then the alternate interior angles are congruent. Geometry Parallel Lines ~13~ NJCTL.org
14 Parallel Lines Review Multiple Choice 1. Name the segment parallel to GH and skew to. EA a. FB b. DA c. JI d. HD 2. Name the segment parallel to BC and skew to EI. a. FB b. DA c. JI d. HD 3. Determine if the statement is always, sometimes, or never true: Two skew lines are coplanar. a. Always b. Sometimes c. Never 4. Determine if the statement is always, sometimes, or never true: Two intersecting lines are coplanar a. Always b. Sometimes c. Never 5. Determine if the statement is always, sometimes, or never true: Two lines that do not intersect are skew. a. Always b. Sometimes c. Never 6. Determine the relationship between 1 & 10. a. Alternate Interior b. Same-side Interior c. Corresponding Angles d. None of these 7. Determine the relationship between 5 & 15. a. Alternate Exterior b. Alternate Interior c. Same-side Interior d. None of these Geometry Parallel Lines ~14~ NJCTL.org
15 8. Given in the diagram to the right, m 2=3x-10 and m 15=2x+30, what is m 12? a. 32 o b. 40 o c. 86 o d. 110 o 9. Given in the diagram to the right, m 5= (7x+2) and m 11=(5x+14), what is m 14? a. 6 b. 44 c. 46 d. 136 In 10-11, use the diagram at the right. 10. Given 2 6, what justifies k m. a. Converse Alternate Interior Angles Theorem b. Converse Alternate Exterior Angles Theorem c. Converse Corresponding Angles Theorem d. there is not enough info to state parallel 11. Given n p, what justifies 1 12 a. Alternate Interior Angles Theorem b. Alternate Exterior Angles Theorem c. Corresponding Angles Theorem d. there is not enough info to make this statement Extended Constructed Response 1. Complete the proof by filling in the missing reasons with the reasons bank to the right. Some reasons may be used more that once. Given: 1 3; MN PQ Prove: 2 3 Statements Reasons MN PQ P M Reasons Bank a) Transitive Property of Congruence b) If 2 parallel lines are cut by a transversal, then the alternate interior angles are congruent. c) Given Q N Geometry Parallel Lines ~15~ NJCTL.org
16 2. Complete the proof by filling in the missing reasons with the reasons bank to the right. Some reasons may be used more that once. Given: n p, k m Prove: 2 & 13 are supplementary Statements Reasons 1. n p, k m m 2 = m m 13 & m 14 are 6. supplementary 7. m 13 + m 14 = m 13 + m 2 = & 13 are supplementary 9. Reasons Bank a) Transitive Property of Congruence b) Definition of supplementary angles c) If 2 parallel lines are cut by a transversal, then the alternate interior angles are congruent. d) Definition of Congruent Angles e) Given f) If 2 parallel lines are cut by a transversal, then the alternate exterior angles are congruent. g) Angles that form a linear pair are supplementary h) Substitution Property of Equality 3. Using a compass and straightedge, construct parallel lines. You can use any method of your choice. Geometry Parallel Lines ~16~ NJCTL.org
17 Answers 1. Segments JI,FE, BA, CD Segments JF,IE FB, EA 2. Segments GJ, GF, GC, HI, HE, HD 3. Yes, because these segments are parallel 4. No, these lines are skew, so they are not coplanar. 5. Never 6. Always 7. Sometimes 8. Sometimes 9. Never 10. Segments JI, GH, BA, CD 11. Segments HI, GJ, CG, DH 12. Segments FG, FB, FJ,, EA FB, EH, EI 13. Yes, because they are parallel 14. No, these lines are skew, so they are not coplanar 15. Never 16. Always 17. Sometimes 18. Same side interior 19. None of these 20. Alternate interior 21. Corresponding 22. Same-side interior 23. None of these 24. Corresponding 25. Same-side 26. Alternate interior 27. Corresponding 28. Corresponding 29. Same-side interior 30. None of these 31. None of these 32. c. Reflexive Property of Equality 33. b. Transitive Property of Equality 34. a. Substitution Property of Equality 35. d. Symmetric Property of Equality 36. Proof reasons should be: Statements Reasons 1. line m line k 1. d b c a. 37. Proof reasons should be: Statements Reasons 1. line m line k 1. f d. 3. m 1 = m 5 3. e & 4 are 4. a. supplementary 5. m 1 + m 4 = 5. c m 5 + m 4 = 6. b & 4 are 7. c. supplementary 38. b. Transitive Property of Congruence 39. a. Substitution Property of Equality 40. d. Symmetric Property of Congruence 41. c. Reflexive Property of Equality 42. Proof reasons should be: Statements Reasons 1. line m line k 1. b. Geometry Parallel Lines ~17~ NJCTL.org
18 d a c. 43. Proof reasons should be: Statements Reasons 1. line m line k 1. c b. 3. m 1 = m 5 3. d & 8 are 4. e. supplementary 5. m 5 + m 8 = 5. a m 1 + m 8 = 6. f & 8 are 7. a. supplementary x= x= 64 and y= 49/4 55. x=6; z=2 56. x=24, y=11; z=22/5 57. x=33; y= Segments AD and BC are parallel 64. Segments OP and RS are parallel 65. None of these 66. x=9 and y=8 and z=7 67. x=8 and y= x= x=86 and y=7 79. x=9; y=6; z=7 80. x=15; y=10; z=8 81. x=25; y= cannot be determined 88. Segments NK and ML are parallel 89. Segments QP and TS are parallel 90. x=6; y=12; z=7 91. x=18; y=7 92. See student work 93. made same side interior the same 94. See student work 95. Made angles congruent that should be supplementary. 96. see student work 97. see student work 98. Part A: c & Part B: d Geometry Parallel Lines ~18~ NJCTL.org
19 99. Part A: b & Part B: b 3. See student work REVIEW 1. c 2. b 3. c 4. a 5. b 6. c 7. a 8. c 9. d 10. c 11. d EXTENDED CONSTRUCTED RESPONSE 1. Statements 1 3 MN PQ Reasons c. Given c. Given b. Alternate Interior Angles Theorem a. Transitive Property of congruence Statements Reasons 1. n p, k m 1. e f c a 5. m 2+m d & 14 are 6. g supplementary 7. m 13 = m 14 = b 8. m 13 + m 2 = h 9. 2 & 13 are 9. b supplementary Geometry Parallel Lines ~19~ NJCTL.org
Name Period GEOMETRY CHAPTER 3 Perpendicular and Parallel Lines Section 3.1 Lines and Angles GOAL 1: Relationship between lines
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