Question

Two angles of a triangle measure 39.5° and 61.7°. Using the Triangle Angle Sum Theorem, which states that the sum of the inside angles of all triangles must equal 180°, find the measure of the third angle.

Answer 1

To find the measure of the third angle, we can subtract the sum of the measures of the two given angles from 180°:

180° - (39.5° + 61.7°) = 180° - 101.2° = 78.8°

Therefore, the measure of the third angle is 78.8°.