Question

A quadrilateral with only one pair of opposite sides parallel is called
a __________________.

Answer 1

(1)A quadrilateral with one pair of opposite sides parallel is called a trapezium.

(2) The diagonals of a rhombus bisect each and other at 90o.

(3) two triangles are said to be congruent if their corresponding sides and angles are equal.

Answer 2

$\bf \color{seagreen} \underbrace{ \: \: \: \: \: \: \: \: \: Trapezium \: . \: \: \: \: }$

A quadrilateral with only one pair of opposite sides parallel is called a trapezium .

A trapezium is a quadrilateral having two parallel sides of unequal length and the other two sides are non-parallel.