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A triangular pyramid

A triangular pyramid has four sides - each of which is a triangle.

There cannot be a three sided pyramid.

If you mean a 3 sided Pyramid with its base being the forth side it would be a Quadrangle.

A four-sided triangular solid is also called a tetrahedron, and two interlaced are called a Star Tetrahedron.

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8y ago
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4y ago

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Q: What is three sided pyramid called?
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