∆BEC =~ ∆ DEA
Then
Statements. Reason
BC=~ AD Given
BC || AD. A.S.A. (angle, side ,angle)
Proof by angle ,side ,angle. A.S.A
1. Parallel lines BC||AD,. Angle
2.BC=~ AD. Side
3. Both triangles ∆ BEC , ∆DEA, shares angle 180° -E
Segments AB, and DC, are congruent
