II. From Flatland to the 3D
You feel so good being a flatlander…
Sometimes strange things happen : Some shapes are passing through Flatland and a few seconds later they vanish… What can it be ?
Actually, It rains 3D solids in FlatLand … and the drops looks like regular polyhedrons.
The flatlanders only see the drops when they cross their land.
For instance, let's have a look at how a Flatlander sees a spherical drop (which is not a polyhedron) :
1. Make a list of the 5 possible regular polyhedrons.
2. Draw a chronological table to show how a drop intersects flatland (for the 3 first polyhedrons)