Piriform curve
Traced by X. Project A on a, to get point B. Project then A, parallel to a, on the line CB, to get the locus-point X. X describes this nice curve, well known to neurologists.
Produced with EucliDraw©
http://users.math.uoc.gr/~pamfilos/
![[alogo]](alogo.png){kind=small}
Piriform curve ![[0_0]](PiriformCurve_files/PiriformCurve_0_0_0.png)
![[1_0]](PiriformCurve_files/PiriformCurve_0_1_0.png)