Fig. 1 | Discrete & Computational Geometry

Fig. 1

From: Nets of Lines with the Combinatorics of the Square Grid and with Touching Inscribed Conics

Fig. 1

For any billiard in the grey conic, there is an associated incircular net. More generally, for any polygonal chain inscribed in the grey conic, there is an associated grid of quadrilaterals with touching inscribed conics. The inscribed circles and the touching inscribed conics are in combinatorially dual line grids. The line grid with touching inscribed conics is given by the lines passing through the centres of the circles

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