Question

Match the reasons with the statements in the proof.

Given:
c | | d, m4 = m5

Prove:
m7 = m8

1. c||d, m∠4=m∠5 Substitution
2. m∠4 = m∠7 Vertical angles are equal.
3. m∠5 = m∠8 If lines ||, alternate interior angles are equal.
4. m∠7 = m∠8 Given

Answer 1

since it is the given angles it is opposite in angles