3D solid shapes
Here are some common solid shapes.
Prisms and pyramids
A prism is a 3D shape which has a constant cross section - both ends of the solid are the same shape and anywhere you cut parallel to these ends will give you the same shape.
For example, in the prism below, the cross section is a hexagon.
This is called a hexagonal prism.
A pyramid has sloping faces that meet at a vertex.
Square-based pyramid
Tetrahedron
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