[br]Page 6 of “Learning Mathematics with Origami” by Tung Ken Lam and Sue Pope published by the Association of Teachers of Mathematics[br][br][br]
Move the big red point to see what happens if the fold meets at a point other than one half of the square's width.[br]Set the size of the square so that the units are more convenient e.g. 24 units if the location point is half of the square's width.
What happens if you try this with an oblong e.g. A paper, 1:sqrt(2)?