This is a visual aid about the properties of regular polygons designed to be projected onto a whiteboard for whole class exposition.Click a numbered blue button above to see the regular polygon with that number of sides. Angles that are not whole numbers are given to one decimal place. See why the sum of the exterior angles sum to 360 by clicking the Polygon Angles button. Draw your own irregular polygons by clicking on the Geometry Toolbox button. Find a formula for the number of diagonals of a polygon with the help of the Mystic Rose. |
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Featured ActivityStriped Sweets Colour the sweet wrappers so that no two are the same. A multi-level activity designed to encourage a systematic strategy for finding all of the different permutations. |
Here is a video designed to help you understand the size of polygon angles: |
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SuggestedPolygon People Name the polygons and other geometrical shapes that make up the Polygon People. |
SuggestedPolygons Name the polygons and show the number of lines and order of rotational symmetry. |
SuggestedPolygon Angles A mixture of problems related to calculating the interior and exterior angles of polygons. |
SuggestedPolygon Properties Connect the names of the polygons with the descriptions of their properties. |
