Origami paper is normally squared with beautiful patterns but you can DIY.
Make your own squared paper
This technique will work with any sized paper. Lay your paper out, with a straight edge of the paper in front of you. Fold the edge on your right upwards, lining this along the top edge. The paper will resemble a triangle with a rectangle on the side. You now just need to cut off the rectangle area. For a crease to cut along, fold over the rectangle towards the triangle. Once the rectangle has been cut off, unfold the triangle for your square.
If you don't want a crease diagonally through your square, you can use the one you've just created as a template.
If you prefer pictures like me...
Cut off this excess rectangle and the magic trick is done...
Who needs a ruler and calculations to make a square? Not me, and not you!
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