Tania Howells adds author to her illustrator cred with this bright, colourful introduction to triangles, rectangles, and their other-angled (and non-angled) brethren. Using a school play to frame her tale, Howells gives each shape a character (“Triangle has already played some exciting roles. As a traffic sign, she led the way, and she got lots of attention as a tortilla chip on the billboard near the library”). Each geometric object is showcased in everyday applications children will be familiar with, and the book relates a fun story about co-operation that elevates it beyond the merely informative.