|President James Garfield|
Garfield is most famous for his time in the Oval Office (sworn in January of 1881), which was cut severly short as he was assassinated, passing away only 200 days into his first term. Garfield, according to this source, had intentions of becoming a math teacher, but left academia to join the Union army at the precipice of the Civil War.
|The trapezoid used in the Garfield proof|
If Garfield's time in the office had not been cut so short, perhaps he would have focused his agenda on the education system in the United States.