A - heptagon - is a polygon with seven straight sides and 7 angles.
-- note --
Some people also use the word - septagon - for this polygon, but the other word is more widely recognised internationally.
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A polygon with 7 sides and 7 angles is a heptagon.
A polygon with 6 sides is called a hexagon.
7 sides
A polygon is a closed figure bounded by sides only. Triangle is the polygon of 3 sides and 3 vertices.
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