Proof: Isosceles Triangle Opposites

Let's prove the following theorem:

Proof:

Proof Table

#	Claim	Reason
1	distance XZ = distance YZ	if distance ZY = distance ZX, then distance XZ = distance YZ (Distance Property 4)
2	m∠YXZ = m∠XYZ	if distance XZ = distance YZ, then m∠YXZ = m∠XYZ (Angles of an Isosceles Triangle)
3	m∠ZXY = m∠XYZ	if m∠YXZ = m∠XYZ, then m∠ZXY = m∠XYZ (Angle Symmetry B)

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