Polygon Angle Explorer

Exterior Angles of Regular Polygons

insect

Interior Angles of Regular Polygons

Interior Angles of Irregular Polygons

The sum of the interior angles of an n-sided polygon is 180 × n - 360 degrees.

⏯ Regular Exterior ⏯ Regular Interior ⏯ Irregular Interior ⏯ Polygon Profiles

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Shapes In The Stars

Shapes In The Stars

Join up the stars to find the hidden regular polygons. So far this activity has been accessed 78861 times and 357 people have earned a Transum Trophy for completing it.

The animations above were made for the this video:
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