pyramid
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it is a term for a face , its different for all, if the polyhedron is based off a 2d polygon, it is the side with that shape(usualy)(their may be more than one)
A polyhedron is a three-dimensional solid with flat faces, straight edges, and sharp corners, while a non-polyhedron does not have these characteristics. Polyhedra are made up of polygons that enclose a single region of space, while non-polyhedra may have curved faces or intersecting edges. In mathematical terms, a polyhedron satisfies Euler's formula (V - E + F = 2), where V is the number of vertices, E is the number of edges, and F is the number of faces, while a non-polyhedron does not.
All of them. If its truly intersecting lines, they have to form right angles. All of them. If its truly intersecting lines, they have to form right angles.
must all edges of semiregular polyhedron be the same length
What polyhedron has eight sides and all of the are equilateral triangle?