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Regular and Irregular Polygons

Understand and identify regular and irregular polygons.

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Regular and Irregular Polygons

Vocabulary

Congruent

Congruent

Congruent figures are identical in size, shape and measure.
Decagon

Decagon

A decagon is a ten sided polygon.
Heptagon

Heptagon

A heptagon is a seven sided polygon.
Hexagon

Hexagon

A hexagon is a six sided polygon.
Irregular Polygon

Irregular Polygon

An irregular polygon is a polygon with non-congruent side lengths.
Nonagon

Nonagon

A nonagon is a nine sided polygon.
Octagon

Octagon

An octagon is an eight sided polygon.
Pentagon

Pentagon

A pentagon is a five sided polygon.
Polygon

Polygon

A polygon is a simple closed figure with at least three straight sides.
Regular Polygon

Regular Polygon

A regular polygon is a polygon with all sides the same length and all angles the same measure.

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