Question

Help please!!

using the properties of congruence and postulates, show that if <1 = <5, then <1 = <7.

Answer 1

see explanation

Explanation:

∠ 1 and ∠ 5 are corresponding angles and are congruent , that is

∠ 1 = ∠ 5

∠ 5 and ∠ 7 are vertically opposite angles and are congruent

Since ∠ 1 and ∠ 5 are congruent and ∠ 5 and ∠ 7 are congruent , then

∠ 1 = ∠ 7