'Element'
No.
the Elements
300 bc by euclid a greek mathmatician.
One ancient Greek mathematician was Euclid.
Euclid compiled the known mathematics of his time into a book called Elements.
about 300 BC
Because he was the first person to write a geometry book!
Because he was the first write a book about Geometry.
100 days
He was a geometrician and he was the first person to write a geometry book.
Adrien-Marie Legendre
He wrote Euclid's Elements.