Make a square from rectangular paper

Steps: 3 steps
Paper: One sheet of A4 paper

Works with A4, US Letter or any rectangular sheet. Lay the short edge along the long edge, fold, and cut off the strip that sticks out. All you need is a pair of scissors.

Watch these steps

Steps

Step 1Place a rectangular sheet upright (A4, US Letter — any rectangle works). Fold the top edge down to meet the right edge, making a triangle.
Step 2Cut off the rectangle that sticks out below the triangle, along the triangle's edge.
Step 3Unfold the triangle. You now have a square.
Finished