Pythagoras
In a right-angled triangle, a² + b² = c².
Pythagoras' theoremFinding the hypotenuseFinding shorter sidesIn context3D Pythagoras
📖 Learn
Hypotenuse
c is the longest side, opposite the right angle.
Find c
Square, ADD, square root.
Find a short side
Square, SUBTRACT, square root.
Worked example
Sides 3 and 4. Find hypotenuse.
- 13² + 4² = 9 + 16
- 2= 25
- 3√25 = 5 ✅
🧪 Play with it: Right-angled triangle
3² + 4² = 9 + 16 = 25 → c = 5
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