Complete the proof that if parallel lines are cut by a transversal, then same-side exterior angles are supplementary. 1 4 9. 8. Given: m | n Prove: m27 + mZ1 = 180 %3D Statements Reasons 1. m n 1. a. Given 2. Z3 = 27, Z1 = 25 2. b. 3. If two angles are 3. m23 = m27, mZ1 = mZ5 congruent, then they have the same measure. 4. mZ3 + m25 = 180 | 4. c. |3D 5. d. 5. Substitution Property of Equality
Complete the proof that if parallel lines are cut by a transversal, then same-side exterior angles are supplementary. 1 4 9. 8. Given: m | n Prove: m27 + mZ1 = 180 %3D Statements Reasons 1. m n 1. a. Given 2. Z3 = 27, Z1 = 25 2. b. 3. If two angles are 3. m23 = m27, mZ1 = mZ5 congruent, then they have the same measure. 4. mZ3 + m25 = 180 | 4. c. |3D 5. d. 5. Substitution Property of Equality
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter12: Angle Relationships And Transformations
Section12.2: Angles And Parallel Lines
Problem 2E
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