Question

In an isosceles triangle if the vertex angle is twice the sum of the base angles then the measure of the vertex angle of the triangle is ​

Answer 1

Answer:

90

Step-by-step explanation:

since vertex angel is twice the base angles

so let's say base angles x, x since both angles are equal

so twice will be 2x

so sum of the angles in a triangle is 180

so x+x+2x=180

4x=180

x=180/4=45

we need vertex angle so

2x=2*45=90