1. Draw a parallelogram.

2. Draw three vertical lines of equal length.

3. Back cover.

4. Draw a dotted line for the blocked part.

5. Draw an ellipse.

6. Draw an edge line.

7. The back cover is curved.

8. Draw a dotted line on the back.

A three-dimensional figure is a geometric figure whose parts are not in the same plane, and it is surrounded by one or more surfaces that can exist in real life.

Points become lines, lines become faces, and faces become bodies. That is to say, when you look at a regular three-dimensional figure such as a cuboid or cube, you can see at most three faces of the three-dimensional figure.