Question

In triangle and bc equal to an .if angle b equal to 70 degree .find the measure of angle a

Answer 1

Hey there!
I hope your question to be :- In a triangle ABC, BC= AC , Angle B = 70° , So Angle A = ?

Given, BC = AC.
Hence, the triangle is isosceles triangle.
We know that, If two sided are equal in a triangle, then the base angles at the non equal side are equal .

So, Angle A = Angle B.
Given ,
Angle B = 70°

So,
Angle A = 70°

Hope this helps!