Mathematician:Daniel Christian Ludolph Lehmus

German mathematician best remembered for the Steiner-Lehmus Theorem.

Nationality
North Rhine-Westphalia, now Germany

History

 * Born: 3 July 1780 in Soest, North Rhine-Westphalia
 * Died: 18 January 1863 in Berlin

Theorems and Conjectures

 * Steiner-Lehmus Theorem (with Jakob Steiner)