# Triangle - Hardcover

by **Mac Barnett** (Author), **Jon Klassen** (Illustrator)

**Part of the Shapes Trilogy, the books that inspired Shape Island from Apple TV+**

Multi-award-winning, _New York Times_ best-selling duo Mac Barnett and Jon Klassen conspire again on a slyly funny tale about some very sneaky shapes.

Meet Triangle. He is going to play a sneaky trick on his friend, Square. Or so Triangle thinks. . . . With this first tale in a new trilogy, partners in crime Mac Barnett and Jon Klassen will have readers wondering just who they can trust in a richly imagined world of shapes. Visually stunning and full of wry humor, here is a perfectly paced treat that could come only from the minds of two of today's most irreverent -- and talented -- picture book creators.

### Author Biography

**Mac Barnett** is the author of several books for children, including _Extra Yarn,_ illustrated by Jon Klassen, a Caldecott Honor Book and winner of a Boston Globe-Horn Book Award, and _Sam and Dave Dig a Hole_, a Caldecott Honor Book and winner of the E. B. White Read Aloud Award. He is the co-author, with Jory John, of the _New York Times_ best-selling series _The Terrible Two._ Mac Barnett lives in California.

**Jon Klassen** is the author-illustrator of _I Want My Hat Back,_ a Theodor Seuss Geisel Honor Book; _This Is Not My Hat,_ winner of the Caldecott Medal and the Kate Greenaway Medal; and _We Found a Hat_. He is also the illustrator of two Caldecott Honor Books, _Sam and Dave Dig a Hole_ and _Extra Yarn,_ both written by Mac Barnett. Jon Klassen lives in Los Angeles.

**Number of Pages:** 48

**Dimensions:** 0.5 x 8.9 x 9 IN

**Illustrated:** Yes

**Publication Date:** March 14, 2017

**Accelerated Reader:**

**Quiz Name:** Triangle

**Interest Level:** Lower Grades, K-3

**Reading Level:** 2.1

**Point Value:** 0.5

## Details

- **Price:** 16.99 USD
- **Vendor:** Books by splitShops
- **Type:** Books
- **Tags:** Books by splitShops, Shopify Collective

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 16.99 USD | In stock |

## Images

- Triangle - Hardcover
- Triangle - Hardcover

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> Updated: 2026-07-23