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If the measure of each base angle is an isosceles triangle is represented by x, then the vertical angle would be represented by: vertex angle leg_ leg

base angles base

2x 180

2x

180 – X

180 2x

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01:31

The vertex angle of an isosceles triangle is twice as large as one of the base angles. Find the measure of the vertex angle.

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An isosceles triangle is a triangle in which two sides are equal in length. The angle between the two equal sides is called the vertex angle, while the other two angles are called the base angles. If the vertex angle is $40^{\circ},$ what is the measure of the base angles?

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If the sum of two angles is $180^{\circ},$ the angles are _________ . If the sum of two angles is $90^{\circ},$ the angles are _________.

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Transcript

and this one you have in a sausage triangle with base angles X. And you’re trying to find the equation for your vertex angle. So to make it easier, we’re just gonna call that question mark. Three angles of a triangle add up to be 100 and 80 degrees, so X plus X plus question mark. What we’re trying…

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