EntityQ74624421· pop 8· linked from 3 articlesFuhrmann triangleSign in to savespecial triangle based on arbitrary triangleConnectionsInternational Standard Book NumberEntityMathWorldEntityEric W. WeissteinEntityEuler's theorem in geometryEntityFuhrmann circleEntityWilhelm FuhrmannEntitycircumscribed circle for triangleEntityCategoriesObjects defined for a triangle