Polygon Angles

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

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Coins and Notes

Coins and Notes

Sharpen your money management skills by accurately calculating sums and working out change. So far this activity has been accessed 146 times and 17 Transum Trophies have been awarded for completing it.

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