NO!!! A heptagon is a plane seven(Hepta) sided figure. It only exists in 2-dimensions.
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A seven sided figure would be a heptagon. A Reuleaux heptagon, is a seven sided figure, but having constant diameter. [As seen in some British coins]. But a regular heptagon would have seven equal sides that were each straight.
A heptagon has 7 sides. 83 x 7 = 581
Well, isn't that a happy little question! A heptagon, with its seven sides, can have a maximum of seven perpendicular lines. Each side can have one perpendicular line drawn from it, creating a lovely pattern of right angles within the shape. Just remember, there are no mistakes, only happy little perpendicular lines waiting to be discovered!
heptagon or a septagon
2. A nonagon has 9 sides and a heptagon has 7 sides. If you subtract 7 from 9 (9-7), only 2 sides remain.