KnowraSimson lineLinked fromLinked fromThe 8 pages that link to Simson line, each with the reason it gives.All 8Related 5Compared with 3Cyclic quadrilateralRelated: A fourth point on the circumcircle of a triangle forms a cyclic quadrilateral with its vertices.OrthocenterRelated: When the point is a vertex, the projections connect altitude-related geometry to the circumcircle.Triangle geometryRelated: It arises from a special alignment among projections onto the three sides.Miquel's theoremRelated: Miquel points arise in triangle configurations that also generate Simson lines.Butterfly theoremRelated: It is another classical circle-geometry result often approached through projection and cyclicity.Bottema'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.