Maths Dictionary · JSS 3
Pythagoras' theorem
Simple meaning
In a right-angled triangle, the square on the hypotenuse equals the sum of the squares on the other two sides.
Example
32 + 42 = 9 + 16 = 25 = 52.
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.