Source: wikibot/steiner-lehmus-theorem
= Steiner–Lehmus theorem
{wiki=Steiner–Lehmus_theorem}
The Steiner–Lehmus theorem is a result in Euclidean geometry that relates to triangles. It states that in a triangle, if two segments are drawn from the vertices to the opposite sides such that the segments are equal in length and are perpendicular to the respective sides, then the triangle is isosceles.