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**Archimedes of Syracuse** - This mathematician's great theorem was chosen by Dunham as the subject of a chapter on estimation of the area of a circle and the value of π. Using only the rudimentary arithmetic available at the time, he calculates π correctly to 2 decimal places by estimating it to be between 3 1/7 and 3 10/71.

**Euclid** - This mathematician's book becomes one of the most studied and widely-dispersed math texts ever, and it establishes him as the preeminent mathematician of his day.

**HIppocrates of Chios** - This individual is a Greek mathematician from the fifth century BC. Little is known about him directly, with most of his biographical information coming from later sources that cite his work.

**Heron** - This mathematician developed a method for determining the area of a triangle given only the length of the three sides.

**Gerolamo Cardano** - This individual was an eccentric and superstitious physician...

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