Question

AB is parallel of DC. Angle B equals a. angle D equals=?
A.a
b.90-a
c.180-a/2
d.180-?

Answer 1

d) 180-90=90

Since a square is formed because adjacent angles are equal i.e. 90° each. So, angle D will be equal to angle i.e, 180-90

Hope it helps

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Answer 2

Your answer will be option d
180-90
i.e 90