File:Harmonic quadrilateral constructions.svg
Summary
| Description |
English: Two constructions of a harmonic quadrilateral. Left, the four points where lines through a given point (red) and the vertices of a square cross the circumcircle of the square. Right, extending a triangle (dark blue) by the point where a symmedian line (red) crosses its circumcircle. |
| Date | |
| Source | Own work |
| Author | David Eppstein |
Licensing
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