Question

IF ΔABC=ΔPQR and angle A=60 and angle B=70 than what is the measure of angle R​

Answer 1

ΔABC ≅ΔPQR

A = 60°

B = 70°

Sum of 3 angles in a triangle = 180°

A + B + C = 180°

60° + 70° + C = 180°

130° + C = 180°

C = 180° - 130°

C = 50°

Therefore by the rule of congruence ∠C = ∠R => ∠R = 50°

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