Lesson: Exterior Angles of a Triangle Mathematics • 8th Grade
In this lesson, we will learn how to find the measure of the exterior angle of a triangle and compare between an exterior angle and its corresponding remote interior angles.
The figure shows some angles identified on triangle .
Identify which angle is an exterior angle.
Identify which angle is an interior angle.
Is the measure of two right angles less than, equal to or greater than the sum of the interior angles of a triangle?
What is the measure of an exterior angle of an equilateral triangle?