Question

the Vertical angle and isosceles triangle is 100 degree find the base of the triangle

Answer 1

base angles will be same so
100+x+x=180
x=40
so base angles are 40

Answer 2

Answer:

We know that an isosceles triangle has two sides of the same length and one side of different length.

The sum of the measures of the angles of the triangle is 180°.

We know the vertical angle of the triangle i.e., 100°.

Let the base angles be x and x since they have the same value.

So we get,

x+x+100=180° (by condition)

2x+100=180°

2x= 180-100

2x=80

x=80/2

x=40°

So the measure of both the base angles are x i.e., 40°.

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