X934

X513-CROSS CONJUGATE OF X57

< 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) { 972, 3 }: Central Line L(972, 3) { 1, 103 }: Central Line L(1, 103) { 7, 104 }: Central Line L(7, 104) { 56, 105 }: Central Line L(56, 105) { 77, 102 }: Central Line L(77, 102) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) X_972 = ISOGONAL CONJUGATE OF X(971) (0.5731, -0.4030) X_3 = CIRCUMCENTER (0.5000, 0.1021) X_1 = INCENTER (0.5714, 0.2333) X_103 = ANTIPODE OF X(101) (0.7857, -0.3208) X_7 = GERGONNE POINT (0.5903, 0.2769) X_104 = ANTIPODE OF X(100) (0.8571, -0.2624) X_56 = EXSIMILICENTER(CIRCUMCIRCLE, INCIRCLE) (0.6316, 0.3438) X_105 = Λ(INCENTER, SYMMEDIAN POINT) (0.9714, -0.0933) X_77 = ISOGONAL CONJUGATE OF X(33) (0.5270, 0.1305) X_102 = Λ(INCENTER, ORTHOCENTER) (0.6364, -0.3897) X_934 = -CROSS CONJUGATE OF X(57) (0.4269, 0.6071) A B C X972 X3 X1 X103 X7 X104 X56 X105 X77 X102 X934 (a, b, c) = (5, 6, 7) | AB = 1

X934 (X513-CROSS CONJUGATE OF X57) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

Constructed Elements

Trilinears: \(1/(bw - cv) : :\), where \(u : v : w\) = X57
Search Value (6, 9, 13): \(0.042941416030\)
▸ Alternate Coordinates1 form
  • Trilinears: \(1/[(b - c)(b + c - a)^{2}] : :\)

X934 lies on the circumcircle.

▸ Incident Central Lines13 lines

{1, 103}, {3, 972}, {7, 104}, {56, 105}, {77, 102}, {100, 658}, {101, 651}, {106, 269}, {644, 1025}, {675, 1088}, {727, 1106}, {741, 1042}, {759, 1014}

▸ Functional Relations20 relations

Notes

Let P be a point on line X4X7 other than X4. Let A' be the reflection of P in BC, and define B' and C' cyclically. The circumcircles of AA'B', BC'A', and CA'B' concur at X934. (Randy Hutson, July 20, 2016)