# Interior Angles - MPM1D

- Author:
- AshleyValenta, LS

- Topic:
- Angles

Move the slider to change the number of sides on the polygon - what do you notice?

What is the sum of interior angles for a triangle?
Can you see a relationship between the number of sides of a polygon and the amount of triangles that "fit" inside it?
How can this help you to work out the sum of interior angles for another polygon?

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