Polygon Angle Explorer

Exterior Angles of Regular Polygons

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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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Tangram Table

Tangram Table

Use the pieces of the tangram puzzle to make the basic shapes then complete the table showing which shapes are possible. So far this activity has been accessed 67269 times and 129 Transum Trophies have been awarded for completing it.

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