What is the measure of angle A?
回答 (2)
2018-03-12 12:17 pm
✔ 最佳答案
∠B + ∠D = 180°116° + x° = 180°
x = 64
∠A = (2x - 40)° = (2×64 - 40)° = 88°
2018-03-12 11:25 am
Hint:
sum of opposite angles=180
sum of opposite angles=180
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