Sidebar 1. Did the Egyptians know it?
Sidebar 2. The Pythagorean theorem in art, poetry, and prose
Translators and commentators, 500-1500 CE
François Viète makes history
From the infinite to the infinitesimal
Sidebar 3. A remarkable formula by Euler
371 proofs, and then some
Sidebar 4. The folding bag
Sidebar 5. Einstein meets Pythagoras
Sidebar 6. A most unusual proof
Sidebar 7. A Pythagorean curiosity
Sidebar 8. A case of overuse
Notation, notation, notation
From flat space to curved spacetime
Sidebar 9. A case of misuse
From Bern to Berlin, 1905-1915
Sidebar 10. Four Pythagorean brainteasers
