Polygons and Polyhedra

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Polygon definition and properties

Definition and properties of parallel lines


Definition and properties of a nonagon (enneagon)

Definition and properties of a hexagon

Definition and properties of a heptagon

Four different ways to test if polygons are congruent.

This is a great link to help find area, depending on whether you know the length of a side or the apothem. You can get a discussion of the various formulas and the page is also interactive which allows you to check and see if what you calculated is on target.

A site that allows to students to interact with various sized polygons and explore tesselations and symmetries.

Gives illustrations of the most basic and the most complex polyhedra

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