r41

The Fermat points Fe1, Fe2, the isodynamic points Is1, Is2 and the Vecten points V1, V2 lie in a conic having its center in the line joining the centroid G and the symmedian K.  (fig. r41_1) . The triangle KHO (H: orthocenter, O: circumcenter) is autopolar with respect to this conic (fig. r41_2), being:
* V1V2 the polar of the De Longchamps point L (fig. r41_3)
* Fe1Fe2 the polar of the point X(376) (fig. r41_3)
 

fig. r41_1                                      fig. r41_2
 
 

fig. r41_3



 
 
 
 
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