true
true
Platonic solids.
A polyhedron is in a subclass of geometric solids. The difference is that a polyhedron must have flat faces and straight edges.
Planes figures such as polygons are not solids. Solids are three-dimensional .
The faces of Platonic solids are regular polygons...
true
Platonic solids.
No. By definition a polyhedron has to have faces (flat surfaces), edges, and vertices. A sphere, hemisphere, and a cylinder are all solids but are not polyhedra.
A polyhedron is in a subclass of geometric solids. The difference is that a polyhedron must have flat faces and straight edges.
Planes figures such as polygons are not solids. Solids are three-dimensional .
The faces of Platonic solids are regular polygons...
Since you use the term "faces" of a shape, you may be referring to polyhedra,which are three dimensional solids. There is no maximum number of faces a polyhedron can have. But for regular polyhedra (a special case where all faces are congruent regular polygons), the regular polyhedron with the most faces is the icosahedron, which has 20 faces, each of them an equilateral triangle. The most familiar regular polyhedron is the cube which has six square faces.
The base polygons of the platonic solids are as follows:Tetrahedron = TriangleCube = SquareOctahedron = TriangleDodecahedron = PentagonIcosahedron = Triangle
In normal usage "polyhedron" refers to solids whose edges are straight lines, not curves, so a strict answer would be: there is no such polyhedron.
A polyhedron is a solid with flat faces - a cube is just one of many different examples of regular polyhedra - otherwise known as platonic solids.
A cylinder
Spheres