Cube
A cube is a square moved through space, so it gets thicker. All cubes have six sides - the top, the bottom, and four sides. Each of these sides is a plane. In this picture you can see the top and two of the sides. The bottom and the other two sides are hidden.
A cube has eight corners, all of them right angles. You can see seven of the eight corners in this picture.
The top and bottom of a cube are parallel planes, and so are the opposite sides. The top and bottom are perpendicular to the four sides.
Perpendicular
Rectangles
Squares
Circles
Triangles
Main Geometry page
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