1. 45°
2. 150°
3. 30°
4. 90°​

The answer is 30 because 180-150 equals 30

“exterior angles of triangles. an exterior (or external) angle is the angle between one side of a triangle and the extension of an adjacent side. try this drag the orange dots on any vertex to reshape the triangle.” look to get to the answer i explained what it means and other things i hope it you .