r1660	circumcircle, tripole, symmedian point, inconic
r1729	isotomic points, inconic
r1739	circumcenter, ninecenter, point X(264), MacBeath conic, ninecircle, orthocentroidal circle
r1754	ninecircle, Lemoine line
r1770	circumconic, circumcircle, circumcevian triangle, tripole
r1826
r1838	centroid, homothetic triangles
r1879	circumconic, cevian triangle

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