We all know that the three-dimensional version of a square is a cube, but what's it called when it looks like the shape shown below? It's a special case of a cuboid called a rectangular cuboid. A cuboid is a hexahedron, a six-faced solid, and its faces are quadrilaterals. So the familiar cube is a special case of a cuboid where all six sides are identical squares. All this takes me back to being a sophomore in high school and it's no wonder geometry was not my favorite subject.
Maybe it would be simpler to call it a brick...
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