1, draw a relatively flat parallelogram at will;

2. Draw three vertical lines with the same length as the parallelogram;

3. Connect three vertical lines;

4. Draw the invisible part of the cube with dotted lines;

So the cube was drawn. (PS is more standard with a ruler)

Extended material: The method of drawing a cuboid is similar. A cube * * * has six faces and 12 sides. Each side is equal in length and area, so it belongs to a special cuboid.