Proof: If Parallelogram Then Sides Congruent B2

Let's prove the following theorem:

if WXYZ is a parallelogram, then distance WX = distance ZY

Z W X Y

Proof:

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Given
1 WXYZ is a parallelogram
Proof Table
# Claim Reason
1 distance WX = distance YZ if WXYZ is a parallelogram, then distance WX = distance YZ
2 distance WX = distance ZY if distance WX = distance YZ, then distance WX = distance ZY

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