Question

triangle PQR and triangle SQR are isosceles triangle . find x°

Answer 1

X equals to 70°

hope it help you

Answer 2

Triangle SQR=angleS+angleQ+angleR=180°
70°+angleQ+angleR=180°
angleQ+angleR=180°-70°
angleQ+angleR=110°
angleQ=55° ,angleR=55°
Triangle
PQR=angleP+angleQ+angleR=180°
40°+angleQ+angleR=180°
angleQ+angleR=180°-40°
angleQ+angleR=140°
angleQ=70° ,angleR=70°

angleQ=70°-55°
=15°