How many ways can you fold 30 or 60 degrees in a rectangular piece of paper without using tools

How many ways can you fold 30 or 60 degrees in a rectangular piece of paper without using tools


Take the width, fold it in half according to the length (it becomes longer after folding in half), then open it, there is a median line, and then fold the vertex of an angle to this median line. Then the hypotenuse is equal to twice the right angle side, and the right triangle of 30 degrees (including 60 degrees) comes out