KnowraTriangleLinked fromLinked fromThe 65 pages that link to Triangle, each with the reason it gives.All 65Broader topic 8Related 3Narrower topic 51Compared with 3Barycentric coordinatesBroader topic: Three vertex weights locate any point in the triangle’s plane when the vertices are noncollinear.Line segmentBroader topic: Each of a triangle’s three sides is a line segment.Interior angleBroader topic: Every triangle’s interior angles sum to 180 degrees.Vertex (geometry)Broader topic: Its three corners provide the simplest polygonal example of vertices.PerimeterBroader topic: Its perimeter is the sum of its three side lengths.SemiperimeterBroader topic: Triangle geometry is where the symbol s and many semiperimeter formulas are standard.QuadrilateralBroader topic: A diagonal divides a quadrilateral into two triangles for many geometric proofs.Pasch's axiomBroader topic: The three sides supply the boundary whose crossings Pasch's axiom constrains.