How To Make A Square From Rectangular Paper 8 Steps

If you do not have scissors, fold the small rectangle over the triangle and crease well. Unfold the paper. Press down hard on the small rectangle with one hand, and on the rest of the paper with the other. Slowly move your hands apart to tear along the crease. [3] X Research source

To make the crease less obvious, flip the paper over and fold it the other way along the same crease.