Proof: Parallel Then Corresponding Short 2

Let's prove the following theorem:

if WX || YZ and m∠WYR = 180, then m∠ZYR = m∠XWY

Z X R Y W

Proof:

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Given
1 WX || YZ
2 m∠WYR = 180
Proof Table
# Claim Reason
1 ZY || XW if WX || YZ, then ZY || XW
2 m∠RYW = 180 if m∠WYR = 180, then m∠RYW = 180
3 m∠ZYR = m∠XWY if ZY || XW and m∠RYW = 180, then m∠ZYR = m∠XWY

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