Learning Geometry
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Types of 3D solids
What is a 3D Solid?
Any shape with three dimensions: Length, width and height.
Platonic solids
Right prisms and Oblique prisms
Polyhedron
Prisms
A polyhedron is a 3D shape where all faces are polygons, as in flat with straight sides and edges.
A prism is a solid object with identical parallel bases, flat faces and the identical faces connecting the two bases.
Platonic solids are regular convex polyhedrons that have the same number of faces meeting each vertex.
There are only 5 solid figures that meet this description and are as mentioned below:
Cube
Tetrahedron
Octahedron
Icosahedron
Dodecahedron
A right prism is a type of prism in which the two bases are parallel and directly above each other. Its faces are more comparable to those with properties of rectangles.
An Oblique prism, different than a right prism, have bases that are not directly above each other, rather slanted. Its faces are also more comparable to of those with properties of a parallelogram.
