Statements (13)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:mathematical_concept
|
| gptkbp:alsoKnownAs |
gptkb:Descartes'_Theorem
|
| gptkbp:appliesTo |
tangent circles
|
| gptkbp:describes |
relationship between four mutually tangent circles
|
| gptkbp:field |
gptkb:geometry
|
| gptkbp:form |
(r1 + r2 + r3 + r4)^2 = 2(r1^2 + r2^2 + r3^2 + r4^2)
|
| gptkbp:generalizes |
gptkb:Soddy's_formula
|
| https://www.w3.org/2000/01/rdf-schema#label |
Kissing Circle Theorem
|
| gptkbp:namedAfter |
gptkb:René_Descartes
|
| gptkbp:relatedTo |
gptkb:Apollonian_gasket
|
| gptkbp:yearProposed |
1643
|
| gptkbp:bfsParent |
gptkb:Descartes'_Theorem
|
| gptkbp:bfsLayer |
7
|