Question

The vertex angle of an isosceles triangle measures 42°. A base angle in the triangle has a measure given by

(2x + 3)°. What is the value of x? What is the measure of each base angle?

Answer 1

x=33

Each base angle measures 69 degrees

Explanation:

the 2 base angles are equal so the measure of 1 base angle = (180 - 42) / 2

= 69 degrees

2x + 3 = 69

2x = 66

x = 33