Seeing External Angles

The red sectors around the outside of each polygon make special angles called external angles. External angles are also the angles turned by a turtle when it draws the path of polygon. External angles are usually shown by lines like the ones you see below when you press the "angles" button.

Turns and Sectors

1. Simon Says
2. Compass Game
3. Polygon Sweep
4. Polygon Walk and Turn
5. Drawn and Filled Paths
6. Seeing External Angles
7. Supplementary Angles
8. Angles of a Triangle
9. Angles of a Hexagon
10. Polygon Connect the Dots
11. Draw with 1/6 and 1/3

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