Question

in an isosceles triangle ABC, AB = AC. if <B = 50° then find <A​

Answer 1

Answer:

two base angles of a isosceles triangle are equal

Step-by-step explanation:

Since <B = <C = 50° ( base angles )

Therefore we can find the <A by angle sum property of triangle.

i.e. sum of all angles of a triangle = 180°

So, <A + <B + <C = 180°

<A + 50° + 50° = 180°

<A + 100° = 180°

<A = 180° - 100°

<A = 80°