One day, Circle and his friends, Square and Triangle, started a game of hide-and-seek. There was only one rule: they couldn't cross the waterfall....

But that's what Triangle did, to prove that he was not afraid of the dark. Circle sighed and went floating off in search of his stubborn friend. "Triangle! Triangle! Where are you?" Circle moved further forward. "Ah, you're here! Why don't you ever play by the rules?" No one was answering... Would it really be the Triangle?

“Triangle”, “Square”, and “Circle” make up Jon Klassen and Mac Barnett's trilogy of shapes. Smart and fun picture books.