Visual Demonstration
Understanding the Pythagorean Theorem
What is the Pythagorean Theorem?
The Pythagorean theorem is a fundamental geometric principle stating that in a right-angled triangle, the square of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the other two sides.
a² + b² = c²
Where a and b are the legs, and c is the hypotenuse
Historical Background
The theorem was known to ancient civilizations, with earliest records dating back to ancient 11th century BCE in China, recorded in the Zhoubi Suanjing. In Western tradition, it's named after the Greek mathematician Pythagoras, though there's debate about whether he was the first to prove it.
Applications
- Measurements and layouts in construction and engineering
- Navigation and geographic positioning systems
- Distance calculations in computer graphics
- Vector decomposition in physics
- Security algorithms in cryptography
Current Calculation
Side a
3
a² = 9
Side b
4
b² = 16
Hypotenuse c
5
c² = 25
Verification
9 + 16 = 25
Common Pythagorean Triples
3-4-5
3² + 4² = 5²
9 + 16 = 25
5-12-13
5² + 12² = 13²
25 + 144 = 169
6-8-10
6² + 8² = 10²
36 + 64 = 100
7-24-25
7² + 24² = 25²
49 + 576 = 625
8-15-17
8² + 15² = 17²
64 + 225 = 289
9-40-41
9² + 40² = 41²
81 + 1600 = 1681