(P279)	(Q852117)
(P1889)	(Q852117) (Q124255)
(P6104)	(Q8487137)

aliases

two-dimensional quadric

External Links

(P2671)	/g/122y0bts /g/122dl2js
(P2812)	QuadraticCurve
(P7666)	antrosios-eiles-kreive
(P11514)	linii-vtorogo-poriadka-c74bef