Goodreads helps you keep track of books you want to read.
Start by marking “Triangle” as Want to Read:
Enlarge cover
Rate this book
Clear rating
Open Preview


(The Shapes Trilogy #1)

3.84  ·  Rating details ·  4,223 ratings  ·  695 reviews
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 the
Hardcover, 46 pages
Published March 14th 2017 by Candlewick Press
More Details... Edit Details

Friend Reviews

To see what your friends thought of this book, please sign up.

Reader Q&A

To ask other readers questions about Triangle, please sign up.
Popular Answered Questions
Carol My 5 year old reader roared! And she made me read it again straightaway! Score! Love! Engaged, developing reader (and I hope writer)! This story invit…moreMy 5 year old reader roared! And she made me read it again straightaway! Score! Love! Engaged, developing reader (and I hope writer)! This story invites readers to enjoy and writers to admire and emulate...with characters as easily drawn as a triangle and a square. For whom is this story? Readers and aspiring authors of all ages! Brilliant! 5 stars!(less)

Community Reviews

Showing 1-30
Average rating 3.84  · 
Rating details
 ·  4,223 ratings  ·  695 reviews

More filters
Sort order
Start your review of Triangle
I shared Triangle with a group of boys at the Maryland State Juvenile Detention Center yesterday. The group we are currently working with are juveniles who will be tried as adults, and this was our first session with these guys.

Many of the kids at this facility have spent time in the foster system. Most read well below grade level. Some have developmental issues. 100% of the boys in this group are black, although that is not the case throughout the facility. During this grant-funded program, we'
Apr 03, 2017 rated it did not like it
Shelves: picture-books

Triangle by Mac Barnett and Jon Klassen was a disappointment for me. This is Barnett and Klassen we’re talking about!!! What could go wrong?

Whenever these two talented and original authors hang out on the pages of a picture book, fun and quirkiness for kids of all ages hits whole new levels. But not this time. Not for me. I read it again. And again. And again. Hoping it was just my mood the first 3 or 4 times. Nope. The story felt flat and mean spirited to me. I could not find the Klassen/Barne
Dave Schaafsma
Oct 16, 2017 rated it really liked it
Each year my family reads all the Goodreads picture books and we have been doing this for years. Everyone rates each book and adds a comment and it may (or may not) affect my overall rating. This is book #1, 2017.

Tara: 4 stars. Cute art.
Harry (12): 3 stars: I like how the author asks us if square actually played a trick on triangle.
Hank (11): 3 stars. Nice. I like the unpredictable little "trick" at the end.
Lyra (10): 3.5 stars. I like the pictures and how square got his revenge on triangle.

Kaethe Douglas
Aug 03, 2017 rated it it was amazing
Shelves: picture-books, horror
Triangle - Mac Barnett, Jon Klassen  Set amidst a dystopian hellscape of repetition and conformity, Barnett and Klassen's story evokes a quiet terror in the unwary reader. Look into Triangle's mad, staring, eyes and see the sort of dread that comes to us all after thirty-six hours of bad coffee and no sleep.
The prose has been sucked dry of blood, or color, or warmth, or life: there is no trace of anything humane left. The prose is so terse, so spare, Cormac McCarthy is beating out his own despa
Whispering Stories
Triangle lives in a triangle house, with a triangular door, in a neighbourhood full of triangle. One day he decides that he wants to play a sneaky trick on Square. So off he goes to Square’s house. It’s a long walk to his house, past lots of shapes, and non-shapes, until he reach’s Square’s house, with his square door, living in the square neighbourhood.

But who will have the last laugh? Will it be Triangle with his sneaky trick, or will Square get him back?

If you are familiar with, and enjoy the
Mar 18, 2017 rated it it was ok
I was disappointed. The characters are not nice and I didn't feel like there was a lesson learned. I did love the illustrations. ...more
Mar 12, 2018 rated it it was amazing
Shelves: ebooks
Exceptionally brilliant idea to keep your neighbors away from entering your home. Living in a world where everything is about angles would be tiresome though.
Aug 02, 2016 rated it it was amazing
Mac Barnett + Jon Klassen = Automatic Pre-order

Verdict: Trilliant setup to what is sure to be a fantastic trilogy!
Jon Nakapalau
Oct 07, 2017 rated it it was amazing
We all try to fit in - but first it is important to ask: what shape will I have to assume to fit into a situation that is new? A very good lesson for children.
destiny ♡⚔♡ [howling libraries]
#1 Triangle ★★★★★
#2 Square ★★★★★
#3 Circle ★★★★★

I technically accidentally read #2 in this series before this one (#1), but it doesn't matter at all. They stand alone just fine and are totally adorable separate from one another or together. Again, these are so fun and the art style is super unique and lovable. I'm gonna have to buy copies of these to keep at home for my son because a library loan wasn't enough.

Also, can we just take a moment to appreciate how hilariously weird Square's shifty-eye
Nov 17, 2018 rated it really liked it
Shelves: read-to-tristan
Cute book. Even cuter when my son insisted on turning the pages himself and when it was over I got to spend 5 mins wiping off hot cheetos finger prints.
Steve Holden
Apr 02, 2017 rated it really liked it
This new offering for kids was displayed front and center at Joseph-Beth on our Friday night visit. It's written by Mac Barnett, but the illustration style of Klassen is a very obvious one, and brings this quirky, clever tale to life. Barnett has himself a fun story that will connect with kids, the intended audience, but also have adults smiling at the antics and conclusion.

Mar 16, 2017 rated it really liked it
A wonderfully Jon Klassen illustrated book about two friends, a square and a triangle, who play tricks on one another. A series about to unfold.
Mar 12, 2017 rated it it was amazing
Shelves: picture-books, arc, 2017
I got a peek at the book on Mac Barnett's iPad when he came to the Library to do a program (best day of my professional and book reader life ever). It's just so good. Jon Klassen's art is somehow even better than before, with so much depth and texture in the deceptively simple scenery. The colors are neutral, but what could have been boring and dreary in another's hands is instead whimsical, intriguing, adorable.

And the facial expressions of the titular character and his friend/maybe frenemy Sq
May 05, 2017 rated it really liked it
Shelves: 2017, picture-books
I wasn't really sure about this odd-duck book. I loved the muted art but Triangle isn't very nice and there isn't really a conclusion but both of my kids liked it and my 5yo asked for it at bedtime again and again. The more I think about it, maybe for my daughter it's nice to have a book where everything isn't always roses (or the conclusion isn't) because that's probably a bit true to life for the school yard. Sometimes kids play mean-spirited tricks and sometimes you retaliate in ways you didn ...more
Featured in a grandma reads session.

Triangle lives in a triangle world, but has a ?friend? he wants to play a sneaky trick on. . . .Square. Square lives in a square world, and there is land that must be traversed to get from one home to the other. No spoilers will be further forthcoming.

My group of listeners were rapt. And then. . . a little confused. And then. . . .we moved on.

Sometimes you just have to.

3 stars. We will continue, but hope for a less dangly end.
The Library Lady

Dark, ugly illustrations--I am NOT a Jon Klassen fan, and he can take that Caldecott Medal and stick it where the sun don't shine--the people on that committee were asshats.
And where Klassen goes, meanness invades. I've liked other Mac Barnett books, but this one seems to have been influenced by I Want My Hat Back. Where are all those moralizing types who want a moral to the story? This is just about 2 "friends" being mean to each other. No resolution, no justice.

And last, but not least
Samuel Florez
Dec 24, 2020 rated it it was amazing
This may have my favorite page turn in a picture book ever. Klassen is a first-rate illustrator.
Ms. B
Oct 29, 2017 rated it liked it
Shelves: 2017, picture, board
A picture book about unreliable narrators. Who is telling the truth in this story about two friends, Triangle and Square, playing sneaky tricks on each other? This might also work as a mentor text for teaching point of view. How would Triangle tell the story? How would Square? How would you?
Rosemary Standeven
Jul 25, 2018 rated it really liked it
I love mathematics – with a particular interest in Shape and Symmetry. So, how could I resist an illustrated book called “Triangle”. Although I am a little older than the target audience of 3 – 7 year olds, I really enjoyed this book, and especially the illustrations.
The main character is an isosceles (yes, of course I measured the sides) triangle, who lives in a triangular house, in an area filled exclusively with triangles of all sizes (but no scalene or right-angle ones). Being a liberal tri
Goshen PL Childrens
GPL Storytime Goes Online: Mac Barnett
August 12, 2020

Read at Storytime December 5,2018
Theme: Shapes

Read for Storytime, June 6th 2017
Theme: Favorite Authors: Mac Barnett

I don't know who was laughing, the kids or the parents when we read this for Storytime. I do know that almost all the adults laughed for the simple eye illustrations used by Klassen to convey the emotions of Triangle and Square (my favorite was the side eye glare that Square maintains through the chase). One of the most
Holly Mueller
Ok, am I crazy? The perspective of the illustration of the square "almost" making it through the door is bugging me! Wouldn't you see the whole square outside the triangle door if he couldn't make it through? It looks like he's standing inside. Correct me if I'm wrong! Anyway, this was a cute story, and I love the Klassen eyes and muted colors, but it didn't quite have the the magic Sam and Dave Dig a Hole or Extra Yarn had. ...more
Sarah Sammis
You can sing the book to "A Horse with No Name." (Almost)
Kiki Bolwijn
I would only read this to my children if I wanted them to turn out to be Sylvia Plaths. And do I? The saga continues.
May 28, 2018 rated it really liked it
Shelves: childrens-books
heh :P
Mar 26, 2020 rated it really liked it
A silly story about friends playing tricks on each other. This would be a fun one for storytime and there are others in this "series" of picture books! ...more
Mar 30, 2017 rated it liked it
Shelves: _picture
Cute and fun! Not my favorite collaboration of theirs but could be a fun storytime book for the right group, and is definitely a good one for parents and kiddos.
May 25, 2018 rated it it was amazing
Loved it!
Jan 16, 2019 rated it liked it
Recommends it for: Jon Klassen Fans / Readers Looking for Quirky Friendship Tales
Shelves: picture-books
Triangle sets out to the house of his friend Square in this picture-book, walking past triangle-shaped objects, indeterminately-shaped objects, and then square-shaped objects. Once there, he plays a "sneaky trick" on his friend (pretending to be a snake), before hightailing it for home, Square in hot pursuit. Once back at Triangle's home, Square in turn plays a sneaky trick on his friend. But was it a deliberate act, as he claims, or is he simply stuck in place...?

A quick perusal of the illustra
Jillian Heise
I have a sneaking suspicion I won't know how I really feel about this book until after I've read all three in the series. Classic Jon Klassen style illustrations with simple shapes highlight the background and prove the eyes are the insights to deeper understanding. ...more
« previous 1 3 4 5 6 7 8 9 next »
There are no discussion topics on this book yet. Be the first to start one »

Readers also enjoyed

  • We Found A Hat
  • This Is Not My Hat
  • I Want My Hat Back
  • You Can Read
  • Bear Came Along
  • The Good Egg Presents: The Great Eggscape!
  • The Dark
  • Stick and Stone
  • After the Fall: How Humpty Dumpty Got Back up Again
  • A Scarf for Keiko
  • The Proudest Blue: A Story of Hijab and Family
  • Over and Under the Pond
  • The Good Egg (The Bad Seed, #2)
  • The Cool Bean (The Bad Seed, #3)
  • A Greyhound, a Groundhog
  • Spork
  • Schnitzel: A Cautionary Tale for Lazy Louts
  • Gaston
See similar books…
Born to non-farmers in a California farming community, Mac Barnett now lives near San Francisco. He's on the board of directors of 826LA, a nonprofit writing center for students in Los Angeles, and he founded the Echo Park Time Travel Mart, a convenience store for time travelers. ...more

Other books in the series

The Shapes Trilogy (3 books)
  • Square
  • Circle

Related Articles

You might know comedian Colin Jost from his work as the co-anchor of Saturday Night Live’s Weekend Update, or perhaps you know him as Scarlett...
126 likes · 47 comments
No trivia or quizzes yet. Add some now »