No. Polyhedra are three-dimensional objects, and the base of any prism, strictly speaking, should be two-dimensional. Any convex polygon (which is two-dimensional) can form the base of a pyramid. A circle, which is technically not a polygon, is the only convex two-dimensional figure that cannot form the base of a pyramid because it forms the base of a cone.
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Yes. Any polyhedron can slide.
Square Based PyramidTetrahedron: A tetrahedron is a polyhedron made of 4 triangles. A "regular tetrahedron" is a tetrahedron where the triangles are equilateral. (A polyhedron is any 3 dimentional figure made of flat surfaces and straight lines.)
Well they are different shapes: prism: A solid object that has two identical ends and all flat sides. The cross section is the same all along its length. The shape of the ends give the prism a name, such as "triangular prism" It is also a polyhedron. Pyramid: A solid object where: The base is a polygon (a straight-sided shape) The sides are triangles which meet at the top (the apex). It is a polyhedron. This is a square pyramid, but there are also triangular pyramids, pentagonal pyramids, and so on. Difference: In a pyramid there are 4 faces which are triangular in shape and there is 1 face which is a square which is its base. On the other hand, A prism has 3 rectangular faces and 2 equilateral triangular faces which work as its base. Similarity: Both of them have triangular faces. Actually I don't find any similarity between them, except that and they are polyhedrons. Plus the base of a pyramid alters the name of the pyramid, just like the end of a prism does.
A triangular based based pyramid is a TETRAHEDRON. It becomes a regular tetrahedron if the four triangles, that make up its shape, are REGULAR, that is they are all the same size by area and shape; that is they are congruent. The word 'polyhedron' means a solid shape of any number of sides.
no , pyramids need not have only squares as their base. the base of a pyramid can be any polygon.