sonom

• 1. pythagorean and galileo's law
• 2. Garfield's proof for pythagorean theorem
• 3. the lunes of Alhazen
• 4. archimedes' arbelos
• 5. pythagorean spiral
• 6. a proof of pythagorean theorem
• 7. pythagorean theorem (proof)
• 8. pythagorean theorem (a puzzle)
• 9. Garfield's proof for pythagorean theorem
• 10. a cube...
• 11. regular tetrahedron
• 12. a pyramid inside a cube-1
• 13. cuboid
• 14. components of a force
• 15. generalization (pappus) of pythagorean
• 16. coordinates-2 (distance)
• 17. law of cosines (proof)
• 18. proof of pythagorean-5
• 19. the three squares problem
• 20. x+1/x
• 21. pyth-proof
• 22. pyth-proof7
• 23. circle-1
• 24. pythagorean (verification)
• 25. square numbers
• 26. pythagorean triples-euclid
• 27. pythagorean triples-plato
• 28. pythagorean triples-proclus
• 29. proof of pythagorean-9
• 30. euclid's proof of pythagorean