X1292

COLLINGS TRANSFORM OF X55

< 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) { 3, 105 }: Central Line L(3, 105) { 4, 120 }: Central Line L(4, 120) { 40, 103 }: Central Line L(40, 103) { 104, 376 }: Central Line L(104, 376) { 378, 915 }: Central Line L(378, 915) { 601, 727 }: Central Line L(601, 727) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) X_3309 = ISOGONAL CONJUGATE OF X(1292) (0.0885, 0.5779) X_3 = CIRCUMCENTER (0.5000, 0.1021) X_105 = Λ(INCENTER, SYMMEDIAN POINT) (0.9714, -0.0933) X_4 = ORTHOCENTER (0.6122, 0.3958) X_120 = -OF-MEDIAL-TRIANGLE (0.3204, 0.3466) X_40 = BEVAN POINT (0.4286, -0.0292) X_103 = ANTIPODE OF X(101) (0.7857, -0.3208) X_104 = ANTIPODE OF X(100) (0.8571, -0.2624) X_376 = CENTROID OF THE ANTIPEDAL TRIANGLE OF X(2) (0.4626, 0.0042) X_378 = REFLECTION OF X(22) IN X(3) (0.5857, 0.3262) X_915 = ISOGONAL CONJUGATE OF X(912) (0.9488, 0.3450) X_601 = INTERSECTION OF LINES X(3)X(31) AND X(55)X(255) (0.5761, 0.2252) X_727 = EVEN (- 2, -1) CIRCUMCIRCLE POINT (1.0060, 0.1685) X_1292 = COLLINGS TRANSFORM OF X(55) (0.0286, 0.2974) A B C X3309 X3 X105 X4 X120 X40 X103 X104 X376 X378 X915 X601 X727 X1292 (a, b, c) = (5, 6, 7) | AB = 1

X1292 (COLLINGS TRANSFORM OF X55) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

Constructed Elements

Trilinears: \(1/((b - c) (a^{2} + b^{2} + c^{2} - 2 a b - 2 a c)) : :\)
Search Value (6, 9, 13): \(10.870796601446\)

X1292 lies on the circumcircle.

▸ Incident Central Lines9 lines

{3, 105}, {4, 120}, {40, 103}, {104, 376}, {378, 915}, {411, 1311}, {517, 840}, {601, 727}, {906, 919}

▸ Functional Relations14 relations

Notes

Let LA be the reflection of the line X1X6 in the line BC, and define LB and LC cyclically. Let A' = LB∩LC, and define B' and C' cyclically. The lines AA', BB', CC' concur in X1292. Let MA be the reflection of the line X7X8 in the line BC, and define MB and MC cyclically. Let A″ = MB∩MC, and define B″ and C″ cyclically. The lines AA″, BB″, CC″ concur in X1292. (Randy Hutson, 9/23/2011)

Let JaJbJc be the excentral triangle. The van Aubel lines of triangles JaBC, JbCA, JcAB bound a triangle perspective to ABC at X1292. (Randy Hutson, June 27, 2018)