From trigonometry to Pythagoras' theorem, there are plenty of mathematical terms you might remember from school – but could you actually answer a question now? After a survey found half of British ...

Click to explore updated revision resources for GCSE Maths: Calculating the length of a line segment, with step-by-step slideshows, quizzes, practice exam questions, and more! Pythagoras' theorem ...

Use Pythagoras’ theorem to show a triangle is right-angled or to find one side of a right-angled triangle when two sides are known. Make sure you are confident at substituting into and manipulating ...