In geometry there are a whole bunch of different shapes. There is a term called SOLID GEOMETRY. Solid Geometry is the geometry of 3-D shapes.
There are two types of solids: Polyhedra and Non-Polyhedra
-Polyhedra: a 3-D solid figure in which each side has a flat surface. Those surfaces are polygons that are joined at their edges. A Polyhedron has NO CURVED SURFACES!!!!
• Called regular if the faces are Congruent
• Also if the Regular Polygons and the same number of faces meet at each vertex.
Example: Pyramid, Prism.
-Non Polyhedra: a 3-D figure that has cures in their shape.
Example: Cylinder, Cone, Sphere.
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