In isosceles triangle ABC, AB=AC.If B=55, calculate A

Question

asked Aug 12, 2021 207k views

2 Answers

BFry · Answer 1 · 2021-08-19T01:24:16+0000

Answer: ∠A = 70°

because ABC is an isosceles triangle and AB = AC

=> ∠B = ∠C = 55°

=> ∠A = 180-(∠B + ∠C) = 180° - 55°.2 = 70°

Explanation: