In an isosceles triangle, if the vertical angle is twice the sum of the side angles, then the vertical angle is:
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Step-by-step explanation:
Let the base/side angles = x
so,the vertical angle = 2x
By angle sum property of a triangle,
2x+x+x = 180
So, x = 45°
So the base angles= 45° each
And the Vertical angle= 2*45
= 90°
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