Linked from

The 3 pages that link to Descartes' theorem, each with the reason it gives.

• Circle packingRelated: It computes a circle tangent to three given circles.

• Sturm's theoremCompared with: Descartes' rule bounds positive roots, while Sturm's theorem gives an exact count on a chosen interval.

• Casey's theoremRelated: It describes curvature constraints in circle configurations where Casey's theorem concerns tangent lengths.