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This sounds like you are talking about a pyramid.

Pyramids in Geometry are not restricted to the square pyramids you may be used to seeing in pictures of from Egypt.

Pyramids are named after the type of polygon that make up their base. In Egypt, since the bases of those pyramids are squares, they are known as square pyramids. If you had a pyramid with a pentagon for a base, then it would be a pentagonal pyramid. Pyramids always have triangles for sides that meet at a common point at the top which is known as the apex.

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12y ago

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