Question

Find the angle x in the given figure.

Answer 1

The sum of the angles of a quadrilateral is ${360}^{\circ }$

$\angle B=180-90={90}^{\circ }$

$\angle A+\angle B+\angle C+\angle D={90}^{\circ }$

Hence,

$x+90+60+70={360}^{\circ }$

$x={140}^{\circ }$