## Posts tagged ‘euclidean geometry’

### Inversion and *n*-circular curves

Inversion is a transformation of the Euclidean plane closely related to circles. It is seldom taught in high schools (at least in France), but it has special interest when dealing with circles, since it maps circles and lines to circles or lines. Inversion is defined with respect to a center *O* and a radius *ρ* (in French, the inversion is said to have *pôle* *O* and *puissance* (power) *ρ²*).

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