Sum of the Angles in a Triangle
Introduction
In our first lesson we are going to investigate the sum of the interior and exterior angles in a triangle.
Key words:
Angle
Triangle
Sum
Interior
Exterior
Interior Angles in a Triangle
What do you notice about the interior angles in a triangle?
Describe the relationship in words, a formula or both
Exterior Angles in a triangle
What do you notice about the exterior angles in a triangle?