exterior angle - the angle between a side of a rectilinear figure and an adjacent side extended outward.

The sum of the measures of two exterior angles of a triangle is 205. What is the measure of the thir

The sum of the measures of two exterior angles of a triangle is 205. What is the measure of the third exterior angle?
The sum of exterior angles for a triangle is 360.
To find the third exterior angle, we take 360 - 205 = [B]155[/B].