EntityQ511431· pop 12· linked from 10 articlesPappus chainSign in to savechain of tangent circles within an arbelosConnectionsinversive geometryEntitygeometryEntityInternational Standard Book NumberEntitycircleEntityellipseEntityAnno DominiEntityPappus of AlexandriaEntityMathWorldEntityfocusEntityarbelosEntitySteiner chainEntityLeon BankoffEntitytangent circlesEntitycircular triangleEntityCategoriesAncient Greek mathematicsArbelosCircle packingInversive geometry