heptagon.
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The name of a 7 sided polygon is Heptagon.
The name of a 7 sided polygon is Heptagon.
A 7-sided polygon is called a heptagon. The word derived from Greek. If it derived from Latin it might be called a septagon, but that is not the case.
= Septagon = A 7-sided polygon (a flat shape with straight sides). (Also called Heptagon)
the interior angle of a 7 sided regular polygon is 128.57 degrees