Question

in an isoceles triangle the vertex angle is twice the each base angle. find the vertex angle .​

Answer 1

Answer:

we know that in isosceles triangle two sides are equal.

Let the base angle be x

and vertex angel be 2x

The some of all side of triangle is 180

x+2x+2x=180

5x=180

x=180/5

x=36

Step-by-step explanation:

I hope it's will help you

Answer 2

Answer:

90(Right angled isosceles triangle)

Step-by-step explanation:

Let the base angle be = x

vertex angle is = 2x

Using Angle sum property of triangle -:

x+x+2x = 180

4x = 180

x = 45

Base angle is = 45

Vertex angle is = 90