The Pythagorean theorem
How a² + b² = c² finds a missing side of any right triangle, plus the triples worth remembering.
In a right triangle, the side opposite the right angle is the hypotenuse — always the longest side. The other two sides are the legs and .
حل شدہ مثال
Find the hypotenuse
A right triangle has legs 3 and 4. How long is the hypotenuse?
حل دکھائیں
- Square and add the legs.
- Take the square root.
جواب: 5
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Finding a leg
Rearrange to : subtract instead of adding.
حل شدہ مثال
Find a missing leg
A right triangle has hypotenuse 13 and one leg 5. Find the other leg.
حل دکھائیں
- Subtract the squares.
- Take the square root.
جواب: 12
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