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Knowledge induction of the third unit of mathematics in the second volume of the fifth grade
Cuboid: It has 6 faces, 8 vertices and 12 sides. Generally, all six faces are rectangles, and the opposite areas and shapes of cuboids are equal. The edge of 12 can be divided into three groups, namely the length, width and height of the rectangle.

Cube: It has 6 faces, 8 vertices and 12 edges. The six faces of a square are square in shape and area. Square, also called cube, is a special kind of cuboid.