EntityQ4382744· pop 21· linked from 14 articlesNewton lineSign in to saveConnectionsquadrilateralEntityInternational Standard Book NumberEntitydigital object identifierEntityparallelogramEntityEuclidean geometryEntityline segmentEntitydiagonalEntityMathWorldEntityconvex polygonEntitytangential quadrilateralEntityEric W. WeissteinEntityincenterEntityMathematical Association of AmericaEntityNewton's theorem (quadrilateral)EntityAnne's theoremEntitycomplete quadrangleEntityAlexander BogomolnyEntityCategoriesQuadrilaterals