After introducing students to the wonder of Pythagoras’ theorem the best way to get them used to using the formula is, to begin with calculating the hypotenuse.

Firstly, students will practise identifying the hypotenuse in section A. Here there are nine right-angled triangles in different orientations and pupils must circle each hypotenuse. Then learners will use Pythagoras’ theorem to calculate the missing hypotenuse in nine more right-angled triangles, again in different orientations. All answers are integers to really allow your students to focus on applying the formula.

This write-on worksheet has plenty of space for students to methodically right down the formula and their workings each time.