The faces can be the same shape or different, and a 3D shape could have a curved surface as well as flat faces. A square has 4 right angles and 4 equal sides. A rectangle has 4 right angles ...
The faces can be the same shape or different, and a 3D shape could have a curved surface as well as flat faces. A square has 4 right angles and 4 equal sides. A rectangle has 4 right angles ...
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