Question

Question 37
If the adjacent angles of a parallelogram are equal, then the parallelogram is a
a) Rectangle
b) Trapezium
c) Rhombus
d) None of these

Answer 1

We know that the adjacent angles of a parallelogram are supplementary, i.e. their sum equals ${180}^{\circ }$. If they are equal, then each angle will be of measure :
$\frac{{180}^{\circ }}{2}={90}^{\circ }$.
Hence, such a parallelogram is a rectangle.