ORTHOPOLE
(2/2)
r1320
r1347
equicenter,
pedal triangle,
similar triangles
r1389
circumcircle,
retrocenter
r1435
circumcircle
r1542
orthologic triangles
,
circumcenter
,
medial triangle
r1572
r1915
circumcircle,
concyclic points
1
2