Question

4. In an isosceles triangle, if the vertex angle is twice the sum of the base
angles, calculate the angles of the triangle.​

Answer 1

Step-by-step explanation:

let one of the base angles be x .

& vertex angle be y .

so 180 = x + x + y y = 2x

2x + y = 180

2x + 2x = 180

4x= 180

x = 45°

y =2×45 = 90°