Proof: Equilateral Triangle 60 2
Let's prove the following theorem:
if △XYZ is an equilateral triangle, then m∠ZXY = 60
Proof:
Given
1 | △XYZ is an equilateral triangle |
---|
# | Claim | Reason |
---|---|---|
1 | m∠XYZ = 60 | if △XYZ is an equilateral triangle, then m∠XYZ = 60 |
2 | m∠XYZ = m∠ZXY | if △XYZ is an equilateral triangle, then m∠XYZ = m∠ZXY |
3 | m∠ZXY = 60 | if m∠XYZ = m∠ZXY and m∠XYZ = 60, then m∠ZXY = 60 |
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