How do I know whether to add or minus in Pythagoras's theorem?

  • Google+ icon
  • LinkedIn icon

Firstly it has to be a right angled trinagle. Even if it is an irregukar shape, draw a line in to make it a right angled triangle. When you have your right angled triangle remember it is ALWAYS + if it is the hypotenuse (longest side) and - if it is not the hypotenuse.

Nehemie M. GCSE Chemistry tutor, A Level Chemistry tutor, GCSE Physic...

About the author

is an online GCSE Maths tutor with MyTutor studying at Sheffield University

Still stuck? Get one-to-one help from a personally interviewed subject specialist.

95% of our customers rate us

Browse tutors

We use cookies to improve your site experience. By continuing to use this website, we'll assume that you're OK with this. Dismiss