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?

x =

Each base angle measures

Answer 1

Assuming the base angles are equal, then (2x + 3) + (2x + 3) + 42 = 180 (angles sum in triangle)
4x + 48 = 180
4x = 180 - 48 = 132
x = 132 / 4 = 33

Each base angle measures 2 x 33 + 3 = 69 degrees

Answer 2

Answer:

First Box: 33

Second Box: 69

Step-by-step explanation:

Just took the quiz, hope this helps! :P