Proof: Alternate Interior Angles Theorem (Converse) 9

Let's prove the following theorem:

if WX || YZ, then m∠YZW = m∠ZWX

X W Z Y

Proof:

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Given
1 WX || YZ
Proof Table
# Claim Reason
1 YZ || WX if WX || YZ, then YZ || WX
2 m∠YZW = m∠ZWX if YZ || WX, then m∠YZW = m∠ZWX

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