Similar to 三角形の円錐曲線

Encyclopedia of Triangle Centers

Abramowitz and Stegun

Mathematics Genealogy Project

Mathesis (journal)

Yff center of congruence

Modern triangle geometry

Congruent isoscelizers point

Equal parallelians point

Catalogue of Triangle Cubics

Circumgon

Apollonius point

Carnot's theorem (conics)

Kiepert conics

Nine-point conic

Steiner ellipse

Steiner inellipse

Circumconic and inconic

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