Posted by Sam on Monday, March 15, 2010 at 3:46pm.
A 7-sided figure is called a heptagon.
A 7 sided figure cannot look like an octagon, an octagon has 8 sides!
If it is a solid, not plane figure, it is a Heptahedron.
http://mathworld.wolfram.com/Heptahedron.html
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