Triangle: A SHAPE trilogy story for 3, 4, 5, 6 year olds from iconic children's book makers Jon Klassen and Mac Barnett (The Shapes Trilogy, 1)
by Mac Barnett and Jon Klassen
Illustrator: Jon Klassen
Triangle: A SHAPE trilogy story for 3, 4, 5, 6 year olds from iconic children's book makers Jon Klassen and Mac Barnett (The Shapes Trilogy, 1) — charted as a top-100 best-selling children's book on Amazon UK in 5 different years (2018–2026), peaking at #57.
Details
| Peak position | #57 (of 5 years charting) |
|---|---|
| Charted | 2018–2026 |
| Category | Literature & Fiction › Growing Up & Facts of Life › Friendship |
| This edition published | 1 March 2018 |
| Publisher | Walker Books |
| Pages | 48 |
| Format | Paperback |
| ISBN-13 | 9781406378368 |
| ISBN-10 | 1406378364 |
| Price range | £1.98 – £8.38 (all time) |
Price history
Price history chart by Keepa.
In the charts
Its best year was 2019, when it finished at #57 in the annual chart for its age group. It first charted in 2018 at #61, climbed to a peak of #57 in 2019, and last appeared in 2026, at #185. It made the list in 5 of the 9 years between.
Chart History
- #185 best-selling children's book of 2026
- #83 best-selling children's book of 2021
- #62 best-selling children's book of 2020
- #57 best-selling children's book of 2019
- #61 best-selling children's book of 2018
FAQs
Was "Triangle: A SHAPE trilogy story for 3, 4, 5, 6 year olds from iconic children's book makers Jon Klassen and Mac Barnett (The Shapes Trilogy, 1)" a bestseller?
Triangle: A SHAPE trilogy story for 3, 4, 5, 6 year olds from iconic children's book makers Jon Klassen and Mac Barnett (The Shapes Trilogy, 1) — charted as a top-100 best-selling children's book on Amazon UK in 5 different years (2018–2026), peaking at #57.
What years did "Triangle: A SHAPE trilogy story for 3, 4, 5, 6 year olds from iconic children's book makers Jon Klassen and Mac Barnett (The Shapes Trilogy, 1)" chart on Amazon UK?
It appeared in the annual Top 100 best-selling children's books list in: 2026 (#185), 2021 (#83), 2020 (#62), 2019 (#57), 2018 (#61).