4
9
4
4
There are only four different configurations.
4
There are 4 of them.
9
4
You can have the 18 as prisms, OR.. they can be cut up into an infinite number of different prisms, as many as your tools for cutting it can make.
Only one.
13
4
2 prisms
There are only four different configurations.
Ignoring rotations, there are 3 distinct solutions.
There are many types of prisms such as rectangular prisms,polyganic prisms crossed prisms and etc.