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# Regular and Irregular Polygons

## Understand and identify regular and irregular polygons.

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Practice Regular and Irregular Polygons

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Estimated3 minsto complete
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Regular and Irregular Polygons

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### Vocabulary Language: English

TermDefinition
Congruent Congruent figures are identical in size, shape and measure.
Decagon A decagon is a ten sided polygon.
Heptagon A heptagon is a seven sided polygon.
Hexagon A hexagon is a six sided polygon.
Irregular Polygon An irregular polygon is a polygon with non-congruent side lengths.
Nonagon A nonagon is a nine sided polygon.
Octagon An octagon is an eight sided polygon.
Pentagon A pentagon is a five sided polygon.
Polygon A polygon is a simple closed figure with at least three straight sides.
Regular Polygon A regular polygon is a polygon with all sides the same length and all angles the same measure.