Question

An angle of isosceles triangle is 100 degree
What is the exterior angle ??

Answer 1

Answer:

the exterior angle is 80°

Step-by-step explanation:

As we know a triangle is 180°

If it is an isosceles triangle then the two sides of an isosceles triangle is same .

the angle of isosceles triangle = 100°

= 180 - 100

= 80°

therefore , the exterior angle = 80°

[ opposite interior angles added together equals the exterior angle ]