Question

the vertical angle of an isoceles triangle is100degree .find its base angle

Answer 1

we know that in isosceles triangle base angle are equal so. the angle be x
x+x+100=180
2x=180-100
2x=80
x=40

Answer 2

Hello dear!!!
Here's your answer...

We know that, opposite angles of equal sides are equal.
So,one of the angle is 100.
Let,the other 2 angles be x

Sum of all angles in a triangle is 180°
x+x+100=180
2x+100=180
2x=180-100
2x=80
x=80/2
x=40°
Angles of an isosceles triangle are 40°,40°,100°


Hope this helps you
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