The Steiner–Lehmus theorem, a theorem in elementary geometry, was formulated by C. L. Lehmus and subsequently proved by Jakob Steiner. It states: Every...

L. Lehmus (1780–1863), German mathematician Steiner–Lehmus theorem Emilie Lehmus (1841–1932), German physician, nephew of C. L. Lehmus Juho Lehmus (1858–1918)...

Parallel axes rule Steiner–Lehmus theorem Steiner inellipse Steinerian Steiner point (computational geometry) Steiner point (triangle) "Steiner (print-only)"...

Steiner–Lehmus theorem states that every triangle with two angle bisectors of equal lengths is isosceles. It was formulated in 1840 by C. L. Lehmus....

geometry) Routh's theorem (triangle geometry) Saccheri–Legendre theorem (absolute geometry) Six circles theorem (circles) Steiner–Lehmus theorem (triangle geometry)...

Theodorus Splitter (geometry) Steiner circumellipse Steiner inellipse Steiner–Lehmus theorem Stewart's theorem Steiner point Symmedian Tangential triangle...

Lehmus (July 3, 1780 in Soest – January 18, 1863 in Berlin) was a German mathematician, who today is best remembered for the Steiner–Lehmus theorem,...

This property of automedian triangles stands in contrast to the Steiner–Lehmus theorem, according to which the only triangles two of whose angle bisectors...

Phys R Olah-Gal, J Sandor (2009), On Trigonometric Proofs of the Steiner–Lehmus Theorem, Forum Geometricorum, 2009 – forumgeom.fau.edu Gonzalo E. Reyes...

within two of Steiner's own papers from that time. Solutions based on algebraic formulations of the problem include those by C. L. Lehmus (1819), E. C...

4169/amer.math.monthly.120.02.140. MR 3029939. Parry, C. F. (1991). "Steiner–Lehmus and the automedian triangle". The Mathematical Gazette. 75 (472): 151–154...