# The Sum of Interior Angles of a Polygon

- Author:
- Samantha Edmiston

- Topic:
- Angles

## Move Points around to come up with a right triangle.

What degree should the 3 angles be?

No matter where you move your points, what is the AREA?

## Plot a midpoint

What is the midpoint?

## Now knowing you're midpoint, see how many triangles can be made from midpoint F to points A, B, C, D, and E

How many Triangles are made?

## Add angles to the BCF triangle

What are the angles to the BCF triangle?