Proof: Collinear Angles Property 7

Let's prove the following theorem:

if m∠ABC = 180, then m∠XAB = m∠CAX

A C B X

Proof:

View as a tree | View dependent proofs | Try proving it

Given
1 m∠ABC = 180
Proof Table
# Claim Reason
1 m∠XAC = m∠XAB if m∠ABC = 180, then m∠XAC = m∠XAB
2 m∠XAB = m∠CAX if m∠XAC = m∠XAB, then m∠XAB = m∠CAX

Comments

Please log in to add comments