Question

If the base of an isosceles triangle is produce on both sides, prove that the exterior angles so formed are equal to each other.

Answer 1

we know that in an isosceles triangle opposite sides and angles are equal....
let two angles be 'x'
and another one angle be'y'
and we know that sum of two interior angles = opposite exterior angle
by the above information exterior angle =y+ x
another
exterior angle is also equal to y+x




so both of the exterior angles are equal i.e ,y+x
hence proved........
hope it helps u .....

Answer 2

x+y is the answer buddy