X1308

COLLINGS TRANSFORM OF X661

X1308 = reflection of X101 in line X1X3
< 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) { 36, 105 }: Central Line L(36, 105) { 100, 514 }: Central Line L(100, 514) { 101, 513 }: Central Line L(101, 513) { 103, 517 }: Central Line L(103, 517) { 104, 516 }: Central Line L(104, 516) { 1, 840 }: Central Line L(1, 840) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) X_3887 = com[INVERSE(n(3rd EULER TRIANGLE))] (0.9920, 0.5711) X_36 = INVERSE-IN-CIRCUMCIRCLE OF INCENTER (1.3333, 1.6330) X_105 = Λ(INCENTER, SYMMEDIAN POINT) (0.9714, -0.0933) X_100 = ANTICOMPLEMENT OF FEUERBACH POINT (0.1429, 0.4666) X_514 = ISOGONAL CONJUGATE OF X(101) (1.0761, -0.0329) X_101 = Ψ(INCENTER, SYMMEDIAN POINT) (0.2143, 0.5249) X_513 = ISOGONAL CONJUGATE OF X(100) (1.0529, -0.0806) X_103 = ANTIPODE OF X(101) (0.7857, -0.3208) X_517 = ISOGONAL CONJUGATE OF X(104) (0.8180, 0.7154) X_104 = ANTIPODE OF X(100) (0.8571, -0.2624) X_516 = ISOGONAL CONJUGATE OF X(103) (0.7703, 0.7386) X_1 = INCENTER (0.5714, 0.2333) X_840 = ISOGONAL CONJUGATE OF X(528) (0.0800, 0.3919) X_1308 = COLLINGS TRANSFORM OF X(661) (1.0102, 0.0916) A B C X3887 X36 X105 X100 X514 X101 X513 X103 X517 X104 X516 X1 X840 X1308 (a, b, c) = (5, 6, 7) | AB = 1

X1308 (COLLINGS TRANSFORM OF X661) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

Constructed Elements

Trilinears: \(f(a,b,c) : f(b,c,a) : f(c,a,b)\) (see note above X1286)
Search Value (6, 9, 13): \(-0.633751051478\)

X1308 lies on the circumcircle.

▸ Incident Central Lines11 lines

{1, 840}, {36, 105}, {100, 514}, {101, 513}, {103, 517}, {104, 516}, {106, 1279}, {110, 1019}, {813, 876}, {901, 1022}, {919, 1027}

▸ Functional Relations6 relations

Notes

Let JaJbJc be the excentral triangle. The Fermat axes of triangles JaBC, JbCA, JcAB bound a triangle perspective to ABC at X1308. (Randy Hutson, June 27, 2018)