Question

ABCD is a rhombus in which angle B=40 then angle C=....
A) 40 B) 140 C) 80 D) 90​

Answer 1

Step-by-step explanation:

We know that the sum of adjacent angles of a parallelogram is 180°. And rhombus is also a parallelogram. so, the sum of angle B and angle C will be 180°

So, 40° + angleC = 180°

therefore, angle C = (180-40)° = 140°

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