What is Pythagoras' Theorem for finding the length of a side of a triangle?

Pythagoras' Theorem can only be used on right angle triangles. To find the length of side a, the theorem can be used as follows:
a2=h2-b2
Taking the square root of the right-hand side of the equation will yield the length of side a of the right-angle triangle.

ES
Answered by Eloise S. Maths tutor

2958 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Simplify 3/(x+1) + (3x-9)/2 = 1, to get a quadratic equation in the format ax^2 + bx + c = 0.


Solve the simultaneous equations, 2x-3y=14 and 3x+4y=4


Solve the simultaneous equations x+y=3 and-x+5y=-15.


Factorise x^2-7x+12


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2026 by IXL Learning