A polyhedron with a polygonal base and triangles for sides.
A tetrahedron has 4 vertices and 4 sides. Each side is an equilateral triangle. * * * * * Each face is an equilateral triangle only if it is a regular tetrahedron; there is no reason to assume it is.
A standard pencil has 6 sides.
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A polygon has many sides whereas a polyhedron has many faces as for example a pyramid
A polyhedron has "many sides" (by definiton). The only 3-D shape which does not have "many sides" is a sphere (which technically only have one "side").
They are the faces of the polyhedron.
It is a polyhedron with two congruent sides: nothing more, nothing less.
It is not a regular polyhedron because it has unequal sides
No. A polyhedron is 3 dimensional. You have a regular polygon, regular because the sides are equal. If you asked about 20 surfaces, then it would be a polyhedron.
None because it has sides whereas a polyhedron has edges
A solid figure with many sides such as a pyramid
No polyhedron has five sides as a pentagon and a hexagon has six sides
Any number greater than or equal to 4. A polyhedron is a generic term meaning a [3-dimensional] shape with many plane sides. There are some other requirements also, but the point is that the term does not specify how many sides or vertices.
A polyhedron is a plane shape, enclosing a single space, which is bounded by straight lines.If ALL angles and ALL sides are equal, then it is a regular polyhedron. All other polyhedra are irregular.Note that if any of the sides is not straight then the shape is not a polyhedron at all, and so cannot be an irregular polyhedron.A polyhedron is a plane shape, enclosing a single space, which is bounded by straight lines.If ALL angles and ALL sides are equal, then it is a regular polyhedron. All other polyhedra are irregular.Note that if any of the sides is not straight then the shape is not a polyhedron at all, and so cannot be an irregular polyhedron.A polyhedron is a plane shape, enclosing a single space, which is bounded by straight lines.If ALL angles and ALL sides are equal, then it is a regular polyhedron. All other polyhedra are irregular.Note that if any of the sides is not straight then the shape is not a polyhedron at all, and so cannot be an irregular polyhedron.A polyhedron is a plane shape, enclosing a single space, which is bounded by straight lines.If ALL angles and ALL sides are equal, then it is a regular polyhedron. All other polyhedra are irregular.Note that if any of the sides is not straight then the shape is not a polyhedron at all, and so cannot be an irregular polyhedron.
If, by "sides" you mean faces, then the answer is a pentahedron.