Proof: Angle a Greater Than Angle B
Let's prove the following theorem:
if m∠CAB > m∠CDB and m∠ABD = 180, then m∠CAD > m∠CDA
Proof:
Proof Table
# | Claim | Reason |
---|---|---|
1 | m∠CAB = m∠CAD | if m∠ABD = 180, then m∠CAB = m∠CAD |
2 | m∠CAD > m∠CDB | if m∠CAB > m∠CDB and m∠CAB = m∠CAD, then m∠CAD > m∠CDB |
3 | m∠CDB = m∠CDA | if m∠ABD = 180, then m∠CDB = m∠CDA |
4 | m∠CAD > m∠CDA | if m∠CAD > m∠CDB and m∠CDB = m∠CDA, then m∠CAD > m∠CDA |
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