4. Two angles of a triangle measure 15° and 85 °. What is the measure for the third angle?

Question

50°
55°
60°
80°
90°

Answer 1

To find the measure of the third angle in a triangle, you subtract the sum of the two given angles from 180°.

So, third angle = 180° - 15° - 85° = 180° - 100° = 80°.

Therefore, the measure of the third angle is 80°.