Question

An isosceles triangle has base angles that each measure 42°. Which equation can be used to find z, the measure of the third angle of this isosceles triangle in degrees

Answer 1

The angles all add up to 180

42 + 42 + x = 180

84 + x = 180

x = 96

x = the third angle

Answer 2

The measure of the third angle of this isosceles triangle in degrees is 96 degrees

Angles in a triangle

The base angles of an isosceles triangle are equal. If an isosceles triangle has base angles that each measure 42, then;

• 42 + 42 + z = 180
• z is the unknown angle

84 + z = 180

z = 180 - 84

z = 96 degreees

Hence the measure of the third angle of this isosceles triangle in degrees is 96 degrees

Learn more on angles in a triangle here: https://brainly.com/question/2938476