Question

Complete the following, so as to make a true statement :

$ix)$ The sum of the angles of a quadrilateral is right angles.

Answer 1

According to the interior angle sum property of
a quadrilateral, the sum of all the four angles of
a quadrilateral is ${360}^{\circ }$.

$\because {360}^{\circ }=4\times {90}^{\circ }$

Hence, the sum of the angles of a quadrilateral is four right angles.