Question

In an isosceles triangle base angle are equal . If vertex angle is 40 degree , then find base angle

Answer 1

Answer:

Base angle =70°

Step-by-step explanation:

An isosceles triangle is a triangle that has two sides of equal length=>

Base angles are equal too

if base angle is A and a vertex angle of 40 degrees, then:-

2A+40°= 180°

2A= 180°- 40°

2A= 140°

A=140°÷2

A= 70°

THERE ARE 2 BASE ANGLES SO BOTH WILL BE 70°

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