Question

In an isosceles triangle, the vertex angle is twice either base angle. (Let the base angle be bin degrees. Remember that the sum of angles of a triangle is 180 degrees ​

Answer 1

Let the base angle =b

vertex angle =2b

Sum of angles in a triangle =180°

b+b+2b=180

b=45°

vertex angle = 2b = 2(45) = 90°

Angles =(45°,45°,90°)