Question

Triangle ABCcongruant triangle PQR if angle R=30 degree angleP=60 degree then qngle b?​

Answer 1

Step-by-step explanation:

p+r+b= 180

60+30+b=180

90+b=180

b=90

Answer 2

∆ABC is congruent with ∆PQR

Then,

angle A = angle P = 60°

angle C = angle R = 30°

angle B = angle Q = x°

by angle sum theorem angle A+B+C = 180°

60°+x°+30°=180°

x°=180°-90°=90°

therefore,angle B = 90°