Statements (17)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:butter
gptkb:geometry |
| gptkbp:alsoKnownAs |
gptkb:Soddy_inner_circle
|
| gptkbp:hasEquation |
radius = (r1*r2*r3)/(r1*r2 + r2*r3 + r3*r1 + 2*sqrt(r1*r2*r3*(r1 + r2 + r3))) (where r1, r2, r3 are excircle radii)
|
| gptkbp:hasProperty |
center is called inner Soddy center
tangent to all three excircles of triangle tangent to all three sides of triangle externally |
| https://www.w3.org/2000/01/rdf-schema#label |
inner Soddy circle
|
| gptkbp:namedAfter |
gptkb:Frederick_Soddy
|
| gptkbp:relatedTo |
gptkb:train
gptkb:Soddy_circles gptkb:outer_Soddy_circle tangent circle |
| gptkbp:tangentTo |
excircle of triangle
incircle of triangle |
| gptkbp:bfsParent |
gptkb:Soddy_circle
|
| gptkbp:bfsLayer |
6
|