EntityQ1368121· pop 12· linked from 17 articlesSteiner chainSign in to savecyclic sequence of circles, each tangent to its two neighbors in the sequence and to two fixed circlesConnectionsconic sectionEntitysemi-axisEntityWashington, D.C.EntitygeometryEntityInternational Standard Book NumberEntitycircleEntitylogarithmEntityellipseEntityfractalEntityhypotenuseEntityhyperbolaEntitytorusEntitytangentEntityeccentricityEntitycircumscribed circleEntityJakob SteinerEntityMathWorldEntityannulusEntityball bearingEntitycentral angleEntityCategoriesCircle packingCirclesInversive geometry