# 9.13: Regular and Irregular Polygons

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**Practice**Regular and Irregular Polygons

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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.### Image Attributions

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Understand the difference between regular and irregular polygons.

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Date Created:

Oct 29, 2012
Last Modified:

Jul 08, 2015
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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