Question

two angle of a triangle are equal that third angle is 80 degree find the other 2 angales

Answer 1

We know that,
Sum of three angles is 180
And if one angle is 80
So the other angles are 50, 50

Answer 2

Let the equal angles be a 

By angle sum property of triangle 

=> a +a +80 = 180

=> 2a = 100

=> a = 50

Other two angles are 50 degree  each