Question

Find out the vertical angle if one of the base angles of an isosceles triangle is 70degree

Answer 1

Answer:

Given the base angle of an isosceles triangles is 700

Let <A=700

Since the triangle is an isosceles triangle,we know that the angles opposite to the equal sides of an isosceles triangle is 1800

<A+<B+<C=1800

700+700+<C=1800

1400+<C=1800

<C=1800−1400

<C=40

Answer 2

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