There once was nine shapes, eight were squares and one was a little circle, all were brothers. Little circle went crying to his mom one day and she said "Circle, what’s wrong?"

circle said "I don’t get along with my brothers, I just don’t fit in. Whatever rectangle they make I just can’t find a place to be" and little circle began to cry again. Circle’s mother comforted him and said "Now circle, I’ll show you just how you can fit in, and help the others make a perfect square!"

So mother called over all the little squares, she told them to make two rows of three, one on the right and one on the left. Then she put circle between the two rows right in the middle. "There!" mother said "Now you’ve made a square!!"

And circle found that he did fit in, that’s how circle learned to make a square.