Solid- 3- dimensional figures with width, depth and height.
All solids have volume and surface area.
There are two types of solids:
Polyhedra- having all flat surfaces.
Non- Polyhedra- if any surface is not flat.
All solids fall under these two categories.
Figures that would be considered polyhedras are; cubes, pyramids and prisms
Figures that fall under the category of non-polyhedras are figures like; cylinders or spheres.
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