Proof: Interior Angles of Parallel Lines
Let's prove the following theorem:
if WX || YZ, then ∠WXZ and ∠XZY are supplementary
Proof:
Proof Table
| # | Claim | Reason |
|---|---|---|
| 1 | WI || YJ | if WX || YZ and m∠WXI = 180 and m∠YZJ = 180, then WI || YJ |
| 2 | ∠WXZ and ∠XZY are supplementary | if WI || YJ and m∠WXI = 180 and m∠YZJ = 180, then ∠WXZ and ∠XZY are supplementary |
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