The sides of right-angled triangles are labelled opposite, hypotenuse and adjacent. Trigonometry explores the relationship between sides and angles in right-angled triangles. The hypotenuse is the ...

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 ...