This keeps the end of the cut neat. Sometimes you can tear ... in strokes from the fold line out towards the paper's edge - this prevents the strips from scrunching. Take your time to make the ...

Trihexaflexagon is constructed by cutting a strip of paper so that it may be marked off in 10 equilateral triangles (A). The strip is folded backward along the line ab and turned over (B).

First, make sure you have all your tools. Scissors, wrapping paper, and tape — preferably transparent. Second, pick a theme ...