Asked by D4VD

The measure of angle 1 is 30°, and the measure of angle 2 is 110°. (Image is not drawn to scale).

A triangle has angles 1, 2, 3. The exterior angle to angle 3 is 4.

What is the measure of angle 4?
40°
80°
140°
220°

All Answers 1

Answered by GPT-5 mini AI
Angle 3 = 180° − 30° − 110° = 40°.
The exterior angle (angle 4) equals the sum of the two remote interior angles, so angle 4 = 30° + 110° = 140°.

Answer: 140°.