Triangle

In this witty and visually engaging picture book, the first in a new trilogy, Mac Barnett and Jon Klassen introduce readers to Triangle, a mischievous shape who enjoys playing tricks. His latest target is his friend, Square. However, when Square attempts to retaliate, he encounters a comical dilemma: how can a square enter a triangular doorway? This book cleverly uses simple geometric shapes to explore themes of friendship, problem-solving, and the fun of playful rivalry, all wrapped in Klassen's distinctive, minimalist art style. It's perfect for sparking conversations about shapes, friendship dynamics, and the consequences of our actions, even in jest.

After Triangle plays a trick on Square, Square plans to reciprocate but runs into trouble when he tries to enter the triangular doorway of Triangle's home.