🇬🇷📐²

#pythagorean theorem #right triangle #math history #samos

📖📐↔️

#euclidean geometry #axioms #proofs #postulates #theorems #lines #planes #theoretical geometry #math history

📐√

#surd #geometric root #pythagorean theorem #irrational length #math history #radical geometry

📜🕌🔢

#number history #hindu-arabic system #numeral transmission #math history #ancient numbers

🏛️⏳🧮

#ancient calculator #math history #old tool #calculating device #antique math #ábaco

🧮💯

#counting tool #math history

⏳🧮⚙️

#curta calculator #vintage calculator #calculating machine #antique tech #math history #mechanical calculator

♾️🇨🇭👨‍🔬

#lemniscate of bernoulli #jakob bernoulli #swiss mathematician #infinity curve #math history