Statements (15)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:butter
gptkb:geometry |
| gptkbp:alsoKnownAs |
gptkb:outer_Soddy's_circle
|
| gptkbp:defines |
The circle that is tangent to three given mutually tangent circles, lying outside all three.
|
| gptkbp:field |
gptkb:geometry
gptkb:Euclidean_geometry |
| gptkbp:hasCounterpart |
gptkb:inner_Soddy_circle
|
| gptkbp:hasEquation |
The radius is given by Descartes' theorem: 1/r = 1/r1 + 1/r2 + 1/r3 - 2*sqrt(1/(r1*r2) + 1/(r2*r3) + 1/(r3*r1))
|
| https://www.w3.org/2000/01/rdf-schema#label |
outer Soddy circle
|
| gptkbp:namedAfter |
gptkb:Frederick_Soddy
|
| gptkbp:relatedTo |
gptkb:Descartes'_theorem
gptkb:Soddy_circles gptkb:kissing_circles |
| gptkbp:bfsParent |
gptkb:Soddy_circle
|
| gptkbp:bfsLayer |
6
|