X311

ISOTOMIC CONJUGATE OF X54

< A B C >: Reference Triangle △ABC < K_a K_b K_c >: Anticomplementary Triangle △K_a K_b K_c [ A B ]: Sideline AB (Base c = 1) [ B C ]: Sideline BC (Side a) [ C A ]: Sideline CA (Side b) { 2, 570 }: Central Line L(2, 570) { 4, 69 }: Central Line L(4, 69) { 22, 157 }: Central Line L(22, 157) { 95, 99 }: Central Line L(95, 99) { 290, 308 }: Central Line L(290, 308) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) K_a = Anticomplementary Vertex K_a (1.6122, 0.5999) K_b = Anticomplementary Vertex K_b (-0.3878, 0.5999) K_c = Anticomplementary Vertex K_c (0.3878, -0.5999) X_2 = CENTROID (0.5374, 0.2000) X_570 = ORTHOGONAL OF X(52) (0.5652, 0.2098) X_4 = ORTHOCENTER (0.6122, 0.3958) X_69 = SYMMEDIAN POINT OF THE ANTICOMPLEMENTARY TRIANGLE (0.4122, 0.0654) X_22 = EXETER POINT (0.4143, -0.1221) X_157 = -OF-TANGENTIAL-TRIANGLE (0.5266, 0.3812) X_95 = CEVAPOINT OF CENTROID AND CIRCUMCENTER (0.5172, 0.1562) X_99 = STEINER POINT (0.1109, 0.4322) X_290 = ISOGONAL CONJUGATE OF X(237) (0.7829, -0.1380) X_308 = ISOTOMIC CONJUGATE OF X(39) (0.4915, 0.1700) X_311 = ISOTOMIC CONJUGATE OF X(54) (0.4818, 0.1803) A B C Ka Kb Kc X2 X570 X4 X69 X22 X157 X95 X99 X290 X308 X311 (a, b, c) = (5, 6, 7) | AB = 1

X311 (ISOTOMIC CONJUGATE OF X54) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

Constructed Elements

Trilinears: \(\csc^{2} A \cos(B - C) : :\)
Barycentrics: \(\csc A \cos(B - C) : \csc B \cos(C - A) : \csc C \cos(A - B)\)
Search Value (6, 9, 13): \(2.175140143881\)
▸ Incident Central Lines10 lines

{2, 570}, {4, 69}, {22, 157}, {53, 324}, {95, 99}, {141, 338}, {290, 308}, {300, 303}, {301, 302}, {305, 1007}

▸ Functional Relations9 relations

Notes

Let OAOBOC be the Kosnita triangle. Let A' be the trilinear pole of line OBOC, and define B' and C' cyclically. The lines AA', BB', CC' concur in X1994. Let A″ be the trilinear pole of line B'C', and define B″and C″ cyclically. The lines AA″, BB″, CC″ concur in X311. (Randy Hutson, November 30, 2018)