In this equation, m∠v=180-2b. If the base angles are integers, the value of 2b will be even. Since the difference of two even numbers is even, the measure of the vertex angle will also be an even number. Therefore, the given statement is never true.
Extra
Isosceles Triangle
An isosceles triangle is a triangle that has two congruent sides called legs. The angle between these two sides is called the vertex angle and its opposite side is called the base. The angles formed by the legs and the base are called base angles. Base angles are congruent.
More information about isosceles triangles can be found on the following pages.
