# The vertex angle of an isosceles triangle measures 20 degrees more than twice the measure of one of its base angles. How many degrees are there in a base angle of this triangle?

##### 1 Answer

Nov 24, 2016

The base angles are

#### Explanation:

Let the the size of each base angle be

The vertex angle is twice

Vertex angle =

The sum of the three angles in a triangle is always 180°

The angles are