Q&A for How to Draw a 3D Box

You can do the same thing for rectangles and any angular shapes (rhombus, pentagon, octagon) or similar shapes.

There is no such thing. Now, if you mean a CONE, draw a sideways oval and then have two lines curve upward into a roof/triangle shape.

The idea is the same on any paper. The grid is only to help get the lines exact. If you struggle drawing it without a grid at first, you can use a ruler to draw one out.

Dotted paper works as well. If you want to make it graph paper, then connect the dots vertically and horizontally and then you will be good to go.

Start by drawing the 8-sided octagon slightly horizontal. Each side needs to equal each other. If you want to make it see through, draw your lines starting at the points, down. To make sure you're doing it correctly, you should see it creates another octagon below. If you don't want it to be see through, draw an octagon, then draw another octagon behind it but have it slightly to the right or to the left of the original. Connect the top points and the points on either left or right, depending on where you have the second octagon located.

Do you mean a sphere? You can use a compass, draw a circle, and shade the areas where there is shadow.