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A polygon is a figure formed by joining three or more segments
(called) at their endpoints (called ).
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The sides intersect at the only.
Each side intersects exactly other sides
at each vertex.
In the next three problems, tell whether each given figure is a polygon.
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Use the polygon at the right to answer the following questions.
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Name the vertices of the polygon
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Is polygon AFEJCL a good name for this polygon?
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Why?
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Give the polygon a correct name.
How many sides does each of the following have?
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pentagon:
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nonagon:
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hexagon:
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decagon:
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heptagon:
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36-gon:
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octagon:
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n-gon:
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Name some places outside of the classroom where you notice polygons.