Question

Prove that the bisector of the vertical angle of isosceles triangle is the perpendicular bisector of the base

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Answer 1

We will take two angles and name them 'x'

And their sum must equal 180

So,

x + x = 180

2x = 180

x = 180/90

x = 90

Hence, it is proved that the bisector of the vertical angle of isosceles triangle is the perpendicular bisector of the base.