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perspectivity, perspective center, homology center, pole, or archaically perspector. The figures are said to be perspective from this center. If each of the...

2}z^{2}-2mnyz-2nlzx-2lmxy=0\end{aligned}}} The perspector of a circumconic or inconic is the perspector of the reference triangle and its polar triangle...

In geometry the Gossard perspector (also called the Zeeman–Gossard perspector) is a special point associated with a plane triangle. It is a triangle center...

Boskoff, Laurent¸iu Homentcovschi, and Bogdan D. Suceava, "Gossard's Perspector and Projective Consequences", Forum Geometricorum, Volume 13 (2013), 169–184...

2012-04-17. Dao Thanh Oai (2015). "Equilateral triangles and Kiepert perspectors in complex numbers". Forum Geometricorum. 15: 105–114. Archived from...

Longchamps point, the Schiffler point, the Exeter point, and the Gossard perspector. However, the incenter generally does not lie on the Euler line; it is...

ISBN 9780521098595. Dao Thanh Oai (2015), "Equilateral triangles and Kiepert perspectors in complex numbers", Forum Geometricorum 15, 105--114. http://forumgeom...

triangle center in 1916 to which John Conway assigned the name Gossard perspector in 1998. After receiving his Ph.D. from Johns Hopkins University in 1912...

isotomic conjugate of the symmedian point. The third Brocard point is the perspector of the Brocard triangle and △ABC. The third Brocard point lies on the...

is the Exeter point of △ABC. Put succinctly, the Exeter point is the perspector of the circummedial triangle and the tangential triangle. The trilinear...

△ABC is perspective to △ABC, and the congruent isoscelizers point is the perspector. This fact can be used to locate by geometrical constructions the congruent...

theorem GEOS circle Gergonne point Golden triangle (mathematics) Gossard perspector Hadwiger–Finsler inequality Heilbronn triangle problem Heptagonal triangle...

circumconic E of the triangle of reference. It can be shown that K is the perspector of E, namely, where △ABC and the polar triangle with respect to E are...

pedal triangle of X and the anticevian triangle of X are perspective; the perspector lies on the Thomson cubic. The Darboux cubic passes through the incenter...

the circumconics can only be rectangular hyperbolas. The locus of the perspectors of this family of rectangular hyperbolas will always lie on the four...

Pomona College Harry Clinton Gossard – geometer, discoverer of the Gossard perspector of a triangle Linda Grant DePauw – modern historian, retired university...

with respect to the medial triangle) of the reference triangle as its perspector. The circumconic and the circumcircle share a fourth point, X(110) of...

through a fixed point, called the center of the perspectivity or the perspector. perspector The center of a perspectivity perspectrix The line in Desargues...