Nearly everything that we can see and touch takes up space. These things are either gases, liquids or solids. You will study some of the properties of liquids and gases in science.
Most solids, or three-dimensional shapes, such as stones and trees, have rough and irregular shape. This usually occurs in nature. However, some three-dimensional shapes, such as tin, can and houses, have regular shapes. These are usually made by people. We often call then geometrical solids.
Look at the photograph below, it show groundnut pyramids
The diagram below show that each pyramid is made up from a square-based pyramid and a cuboid.
Cuboids and cubes
Look at a matchbox. The name of its shape is a cuboid
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