Geometry math question

Question

Find the measure of the third angle of a triangle if the measures of the two other triangles are given 29.7 and 83.5.

A)159.0

B)61.9

C) 66.8

D) 58.4 

Answer 1

Let x = the measure of the third angle

29.7 + 83.5 + x = 180

113.2 + x = 180

x = 66.8º

 

Answer 2

Find the measure of the third angle of a triangle if the measures of the two other angles are given 29.7 and 83.5.

 

Just subtract the two angles from 180

 

180 - 29.7 - 83.5