1. Start by drawing four squares that are missing their bottoms.
2. Draw a square over the bottom of the first square you drew. Leave the right side open. We’ll call this Square A.
3. Extend the legs of the second square down and extend the open legs Square A to meet with the second square.
4. On the other side of the second square, extend the legs of Square A so that they stretch across Square 3 and meet with Square 4.