Sum of the Interior Angles in a Heptagon


Create segments AC, AD, AE, and AF by moving the sliders in red all the way to the right

Think About and Answer the Following Questions

What do you remember about the sum of the angles in a triangle?

How many sides does a heptagon have?

How many triangles were you able to create in the heptagon above?

What might you guess then would be the sum of all the angles in a heptagon?