Question:
If the adjacent sides of a parallelogram are equal, then parallelogram is a
(a) rectangle
(b) trapezium
(c) rhombus
(d) square
Solution:
(c)We know that, in a parallelogram, opposite sides are equal.
But according to the question, adjacent sides are also equal.
Thus, the parallelogram in which all the sides are equal is known as rhombus.