Question

in fig 6.12 , PQ=PR ,RS=RQ and ST||QR. If the exterior angle RPU is 140°, then the measure of angle tsr is??


a) 55°
b) 40°
c)50°
d)45°​

Answer 1

in fig 6.12 , PQ=PR ,RS=RQ and ST||QR. If the exterior angle RPU is 140°, then the measure of angle tsr is?

so, ans is opt B 40°