Proof: Reorder Terms 7

Let's prove the following theorem:

Proof:

Proof Table

#	Claim	Reason
1	m∠ABC = m∠CBA	m∠ABC = m∠CBA (Angle Symmetry Property)
2	x + (m∠CBA) = y	if x + (m∠ABC) = y and m∠ABC = m∠CBA, then x + (m∠CBA) = y (Substitution Example 10)

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