Points, Lines, and Planes Question
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Grade 10 Points, Lines, and Planes CCSS: HSG-CO.C.9
Given the parallel lines k and m, and transversal t, prove that ∠1≅∠7.

Statement | Reason |
1.k || m | 1.Given |
2.∠1≅∠5 | 2.Corresponding angles are congruent |
3.∠5≅∠7 | 3. |
4.∠1≅∠7 | 4.Substitution property of equality |
- Vertical angles are congruent
- Given
- Same side interior angles are congruent
- Supplementary angles are congruent