X693

ISOTOMIC CONJUGATE OF X100

< A B C >: Reference Triangle △ABC [ A B ]: Sideline AB (Base c = 1) [ B C ]: Sideline BC (Side a) [ C A ]: Sideline CA (Side b) { 2, 650 }: Central Line L(2, 650) { 320, 350 }: Central Line L(320, 350) { 325, 523 }: Central Line L(325, 523) { 514, 661 }: Central Line L(514, 661) { 76, 764 }: Central Line L(76, 764) { 100, 927 }: Central Line L(100, 927) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) X_100 = ANTICOMPLEMENT OF FEUERBACH POINT (0.1429, 0.4666) X_2 = CENTROID (0.5374, 0.2000) X_650 = CROSSDIFFERENCE OF X(1) AND X(3) (13.7143, -4.1991) X_320 = ISOTOMIC CONJUGATE OF X(80) (-2.6735, -3.5993) X_350 = -HIRST INVERSE OF X(75) (-3.5227, -3.1370) X_325 = -HIRST INVERSE OF X(69) (-0.3370, -0.7398) X_523 = ISOGONAL CONJUGATE OF X(110) (1.0856, -0.0096) X_514 = ISOGONAL CONJUGATE OF X(101) (1.0761, -0.0329) X_661 = CROSSDIFFERENCE OF X(1) AND X(21) (48.4286, -23.0952) X_76 = 3rd BROCARD POINT (0.4567, 0.1388) X_764 = TRILINEAR CUBE OF X(513) (1.2143, -0.1166) X_927 = ISOGONAL CONJUGATE OF X(926) (1.0037, 0.1836) X_693 = ISOTOMIC CONJUGATE OF X(100) (-25.8163, 8.9981) A B C X100 X2 X650 X320 X350 X325 X523 X514 X661 X76 X764 X927 X693 (a, b, c) = (5, 6, 7) | AB = 1

X693 (ISOTOMIC CONJUGATE OF X100) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

Constructed Elements

Trilinears: \((b - c)/a^{2} : (c - a)/b^{2} : (a - b)/c^{2}\)
Barycentrics: \((b - c)/a : (c - a)/b : (a - b)/c\)
Search Value (6, 9, 13): \(43.948021245883\)
▸ Alternate Coordinates2 forms
  • Barycentrics: \(|AP(1)| - |AU(1)| : :\)

  • Barycentrics: directed distance from A to line X1X6 : :

▸ Incident Central Lines8 lines

{2, 650}, {76, 764}, {100, 927}, {320, 350}, {321, 824}, {325, 523}, {514, 661}, {649, 812}

▸ Functional Relations14 relations

Notes

X693: Let A29B29C29 and A30B30C30 be Gemini triangles 29 and 30, resp. Let E29 and E30 be the {ABC, Gemini 29}-circumconic and {ABC, Gemini 30}-circumconic, resp. Let A' be the intersection of the tangent to E29 at A29 and the tangent to E30 at A30. Define B' and C' cyclically. The lines AA', BB', CC″ concur in X693. (Randy Hutson, January 15, 2019)