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

2954 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

What is (18)^1/2 -(8)^1/2 simplified?


(x+6) and (x+5) are the length and width, respectively, of a rectangle with area 20. Calculate the width of the rectangle.


f(x) = 4x - m, g(x) = mx + 11, fg(x) = 8x + n. m and n are constants. Find the value of n.


Fully expand (2x+4)(4x-3).


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