Question

In an isosceles triangle, the base angles are equal. the vertex angle is thrice either base angle

Answer 1

Let the base angles be x.
So vertex angle =3x.
So by sum angle property of triangle
Angle a +angle b+angleC =180
x+x+3x=180
5x=180
x=180/5
x=36

so each base angle are of 36 degree and vertex angle 3×36=108


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