Q. 85.0( 1 Vote )

If ABCD is a parallelogram with two adjacent angles A = B, then the parallelogram is a
A. rhombus

B. trapezium

C. rectangle

D. none of these

Answer :

It is given in the question that,

ABCD is a parallelogram where two adjacent angles A = B


We know that, sum of adjacent angles is 180o


∴∠ A + B = 180o


2 A = 180o


A = 180/2


A = 90o


As, A = B = C = D = 90o


ABCD is a rectangle as all the angles are equal to 90o


Hence, option (C) is correct

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