遇见三角形。他要对他的朋友方形玩一个卑鄙的把戏。诸如三角形认为……该书在视觉上令人惊叹，充满了讽刺的幽默，它是一种完美的节奏，翻转了传统的概念书，并从一个全新的角度来接近传统。

From the award-winning team behind Sam and Dave Dig a Hole, and illustrated by Jon Klassen, the Kate Greenaway-winning creator of This Is Not My Hat and I Want My Hat Back, comes the first tale in an exciting new trilogy. Meet Triangle. He is going to play a sneaky trick on his friend, Square. Or so Triangle thinks... Visually stunning and full of wry humour, here is a perfectly-paced treat that flips the traditional concept book, and approaches it from a whole new angle.