Answerrof:Given:
∠
4
∠4 is congruent to
∠
5
∠5
Statements Reasons
∠
4
≅
∠
5
∠4≅∠5 | 1. Given
‾
∥
‾
BC
∥
DE
| 2. Alternate Interior Angles Theorem
∠
4
≅
∠
∠4≅∠DCE | 3. Corresponding Angles Postulate
∠
≅
∠
4
∠DCE≅∠4 | 4. Transitive Property of Congruence
