Give you a piece of paper of any shape. How to cut it into a square with scissors? (You can draw an explanation) Make it clear!
Fold the paper in half twice, and if the central angle is 90 degrees, cut it on two equal sides with scissors. Maybe the landlord won't understand what I said, just grasp the conditions of folding in half and understand it slowly. I can't help it Yes, any shape will do. Please understand slowly.