Exterior Angle Theorem with Questions
- Tom Maes,
Drag A, B and C around. Pay attention to the measures of the interior and exterior angles as you do so.
Make a conjecture for the relationship between the measures of the interior angles and the exterior angles of a triangle.
Make a conjecture about all three exterior angles.
If the interior angle of a triangle is acute, what is the measure of the exterior angle? And vice versa?