Question

Find the value of C.

• A. 100${}^{\circ }$
• B. 160${}^{\circ }$
• C. 140${}^{\circ }$
• D. 120${}^{\circ }$

Answer 1

The correct option is D 120${}^{\circ }$

We know sum of angles around a point is 360°
Hence
90${}^{\circ }$+ 45${}^{\circ }$+ 20${}^{\circ }$+ 25${}^{\circ }$+ 60${}^{\circ }+C$ = 360${}^{\circ }$
$\therefore$ C = 360${}^{\circ }$ - 240${}^{\circ }$
= 120${}^{\circ }$