Question

From the given figure, the volume of x is___

• A. ${90}^{\circ }$
• B. ${80}^{\circ }$
• C. ${85}^{\circ }$
• D. ${100}^{\circ }$

Answer 1

The correct option is B

${80}^{\circ }$

The sum of extericer angles of a quadrilateral $={360}^{\circ }$

$\therefore 90+65+125+x={360}^{\circ }$

$x={360}^{\circ }-{280}^{\circ }$

$x={80}^{\circ }$

Hence (B)