9.6 Polygons

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9.6 Polygons

Objective: Classify polygons by their sides.

http://www.flickr.com/photos/amonroy/27017739/

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Polygon ­ closed plane figure formed by three or more segments called sides.

Vertex ­ a point at which two sides of a polygon meet.

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How can you describe these figures?

http://www.flickr.com/photos/glennharper/146165203/

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http://www.flickr.com/photos/eole/380316678/

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Triangle

Quadrilateral

Pentagon

Hexagon

Octagon

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Pentagon ­ a polygon with 5 sides.

http://www.flickr.com/photos/redperm/89937682/

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Hexagon ­ a polygon with 6 sides.

http://www.flickr.com/photos/estherase/227972493/

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http://www.iancredible.com/UFC61/images/octagon.jpg

Octagon ­ a polygon with 8 sides.

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http://www.flickr.com/photos/peterkaminski/1510724/

Regular PolygonA polygon with equal side lengths and equal angle 

measures.

A Stop sign is a good example.

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http://www.flickr.com/photos/peterkaminski/1510724/

Diagonal ­ a segment, other than a side, that connects the vertices of the polygon.