Answer:
Option B is correct.
Explanation:
∠A = 27
27 + 90 + 63 = 180
you can see that square right. the square is 90.
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x + 90 + 63 = 180
∠A + ∠B + 45 + 63 = 180 {Straight line angles}
From the figure we know that , ∠B + 45 = 90
Therefore, ∠A + 90 + 63 = 180
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