Modular Pentagons: 18

Each of these small pentagonal boxes requires 10 sheets of 5 7/8 in (15 cm) square paper: 5 sheets for each lid and 5 for each base.
 
Double-sided paper works best for modular pentagons because the reverse side of the paper will often be revealed in the finished model.
 
The boxes featured on this page were designed by Tomoko Fuse, Mark Bolitho, and Dennis Walker.