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Emily G.

asked • 10/12/16

Given: <1 and <2 are supplementary angles Prove: l || m

Given: <1 and <2 are supplementary angles
Prove: l || m
 
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STATEMENT                                                               REASON
1.∠1 and ∠2 are supplementary angles                        1. Given
2. m∠1 + m∠2 = 180°                                                2.______
3. ∠1 and ∠3 are supplementary angles                       3. Exterior sides in opposite rays
4.________                                                               4._________
5. m∠1 + m∠2 = m∠1 + m∠3                                      5._________
6._________                                                              6._________
7. l || m                                                                    7.__________

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