KnowraSimson lineLinked fromLinked fromThe 8 pages that link to Simson line, each with the reason it gives.All 8Related 5Compared with 3Bottema's theoremCompared with: Both results use perpendicular feet on triangle sidelines, but Simson’s theorem concerns collinearity.Five circles theoremCompared with: It is another classical consequence of circle incidence, but its conclusion is collinearity rather than concyclicity.Van Lamoen circleCompared with: It is another classical locus from triangle geometry, but arises from perpendicular projections rather than centroids.