Maths Dictionary · JSS 3
Hypotenuse
Simple meaning
The longest side of a right-angled triangle. It is always opposite the right angle.
Example
In a 3-4-5 triangle, the hypotenuse is 5.
See it
From the Pythagoras' Theorem lesson. Try moving things around.
60° + 48° + 72° = 180°
This is an acute-angled, scalene triangle. Drag any corner!
Put the three angles together and they make a straight line: 180°.
Your task: make a right-angled triangle
Drag a corner until one angle shows 90°. Tip: line two sides up with the grid lines.