Proof: Collinear Angles Property 5

Let's prove the following theorem:

Proof:

Proof Table

#	Claim	Reason
1	m∠XAC = m∠XAB	if m∠CBA = 180, then m∠XAC = m∠XAB (Collinear Angles Property 3)
2	m∠XAB = m∠XAC	if m∠XAC = m∠XAB, then m∠XAB = m∠XAC (Symmetric Property of Equality)

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