X650

CROSSDIFFERENCE OF X1 AND X3

X650 = crossdifference of every pair of points on line {1, 3}
< 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) { 230, 231 }: Central Line L(230, 231) { 44, 513 }: Central Line L(44, 513) { 241, 514 }: Central Line L(241, 514) { 2, 693 }: Central Line L(2, 693) { 55, 884 }: Central Line L(55, 884) { 100, 919 }: Central Line L(100, 919) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) X_230 = -CEVA CONJUGATE OF X(114) (0.9746, 0.6698) X_231 = -CEVA CONJUGATE OF X(128) (1.0375, 0.6458) X_44 = -LINE CONJUGATE OF X(1) (2.1429, 2.0996) X_513 = ISOGONAL CONJUGATE OF X(100) (1.0529, -0.0806) X_241 = -LINE CONJUGATE OF X(55) (1.1217, 1.2442) X_514 = ISOGONAL CONJUGATE OF X(101) (1.0761, -0.0329) X_2 = CENTROID (0.5374, 0.2000) X_693 = ISOTOMIC CONJUGATE OF X(100) (-25.8163, 8.9981) X_55 = INSIMILICENTER(CIRCUMCIRCLE, INCIRCLE) (0.5490, 0.1921) X_884 = ISOGONAL CONJUGATE OF X(883) (1.0241, 0.0337) X_100 = ANTICOMPLEMENT OF FEUERBACH POINT (0.1429, 0.4666) X_919 = ISOGONAL CONJUGATE OF X(918) (1.0058, 0.1699) X_650 = CROSSDIFFERENCE OF X(1) AND X(3) (13.7143, -4.1991) A B C X230 X231 X44 X513 X241 X514 X2 X693 X55 X884 X100 X919 X650 (a, b, c) = (5, 6, 7) | AB = 1

X650 (CROSSDIFFERENCE OF X1 AND X3) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

Constructed Elements

Trilinears: \(\cos B - \cos C : \cos C - \cos A : \cos A - \cos B\)
Barycentrics: \(\sin A (\cos B - \cos C) : \sin B (\cos C - \cos A) : \sin C (\cos A - \cos B)\)
Search Value (6, 9, 13): \(-18.029957434208\)
▸ Alternate Coordinates5 forms
  • Trilinears: \((b - c)(b + c - a) : (c - a)(c + a - b) : (a - b)(a + b - c)\)

  • Trilinears: \(\cos(A/2) \sin(B/2 - C/2) : :\)

  • Trilinears: \(\sin^{2}(B/2) - \sin^{2}(C/2) : :\)

  • Trilinears: \(\cos^{2}(B/2) - \cos^{2}(C/2) : :\)

  • Barycentrics: \(a(b - c)(b + c - a) : b(c - a)(c + a - b) : c(a - b)(a + b - c)\)

▸ Linear Combinations1 combination
  • X650 = \(3\) X2 + X17494, \(3\) X2 + \(5\) X26777, \(9\) X2 - X26824, \(9\) X2 - \(5\) X26985, \(3\) X2 - \(7\) X27115, \(3\) X2 - \(5\) X31209, \(6\) X2 - \(5\) X31250, \(3\) X2 - \(4\) X31287, X649 - \(3\) X1635, X649 - \(4\) X2516, \(3\) X649 + X4813, X649 + \(3\) X4893, \(3\) X649 - X4979, \(2\) X659 + X2526, X661 + \(3\) X1635, X661 + \(4\) X2516, X661 + \(2\) X4394, \(2\) X661 + X4790, \(3\) X661 - X4813, X661 - \(3\) X4893, \(3\) X661 + X4979, \(3\) X663 + X4814, \(3\) X663 - X4895, \(5\) X663 - X4959, X693 + \(5\) X26777, \(3\) X693 - X26824, \(3\) X693 - \(5\) X26985, X693 - \(7\) X27115, X693 + \(3\) X31150, X693 - \(5\) X31209, \(2\) X693 - \(5\) X31250, X693 - \(4\) X31287, X693 - \(6\) X44567, \(2\) X693 - \(3\) X45320, \(3\) X905 - \(2\) X3960, \(3\) X1635 - \(4\) X2516, \(3\) X1635 - \(2\) X4394, \(6\) X1635 - X4790, \(9\) X1635 + X4813, \(9\) X1635 - X4979, \(3\) X1638 - \(2\) X3676, \(3\) X1638 - \(4\) X7658, \(3\) X1638 - X21104, \(3\) X1639 - \(2\) X3239, \(3\) X1639 - X3700, \(3\) X1639 - \(4\) X4521, \(3\) X1639 + \(2\) X4765, \(6\) X1639 - X4820, \(3\) X1639 + X4976, \(4\) X2490 - X6590, \(2\) X2490 - \(3\) X14425, \(4\) X2490 + X45745, \(8\) X2516 - X4790, \(12\) X2516 + X4813, \(4\) X2516 + \(3\) X4893, \(12\) X2516 - X4979, X3004 + \(2\) X11068, \(4\) X3239 - X4820, \(4\) X3239 - \(3\) X4944, \(2\) X3239 + X4976, \(3\) X3669 - \(4\) X3960, X3669 - \(4\) X14838, X3700 - \(4\) X4521, X3700 + \(2\) X4765, \(2\) X3700 - \(3\) X4944, \(3\) X3709 - X4526, X3762 + \(3\) X45671, X3960 - \(3\) X14838, X4024 - \(9\) X6544, \(2\) X4041 + X4162, \(3\) X4041 - X4814, \(3\) X4041 + X4895, \(5\) X4041 + X4959, X4105 - \(3\) X14392, X4106 - \(4\) X25666, \(3\) X4162 + \(2\) X4814, \(3\) X4162 - \(2\) X4895, \(5\) X4162 - \(2\) X4959, \(2\) X4163 - \(3\) X44729, X4369 - \(3\) X4763, X4378 - \(3\) X14419, \(3\) X4379 - \(5\) X24924, \(3\) X4379 - \(7\) X31207, X4380 + \(3\) X4776, X4380 + \(2\) X4940, X4382 - \(3\) X4728, X4382 - \(5\) X30835, \(4\) X4394 - X4790, \(6\) X4394 + X4813, \(2\) X4394 + \(3\) X4893, \(6\) X4394 - X4979, X4467 - \(3\) X27486, X4467 + \(3\) X30565, X4468 + \(2\) X17069, X4474 - \(3\) X14430, \(2\) X4521 + X4765, \(8\) X4521 - X4820, \(8\) X4521 - \(3\) X4944, \(4\) X4521 + X4976, X4560 + \(2\) X20317, X4705 + \(2\) X6050, \(3\) X4728 - \(2\) X23813, \(3\) X4728 - \(5\) X30835, \(7\) X4751 - \(3\) X4828, \(3\) X4763 - \(2\) X31286, \(6\) X4763 - X43067, \(4\) X4765 + X4820, \(4\) X4765 + \(3\) X4944, \(3\) X4776 - \(2\) X4940, \(3\) X4776 - X20295, \(3\) X4790 + \(2\) X4813, X4790 + \(6\) X4893, \(3\) X4790 - \(2\) X4979, \(2\) X4791 - \(3\) X45664, X4813 - \(9\) X4893, \(5\) X4814 + \(3\) X4959, X4820 - \(3\) X4944, X4820 + \(2\) X4976, X4841 + \(8\) X31182, X4841 + \(4\) X43061, \(2\) X4885 + X17494, \(2\) X4885 + \(5\) X26777, \(6\) X4885 - X26824, \(6\) X4885 - \(5\) X26985, \(2\) X4885 - \(7\) X27115, \(2\) X4885 + \(3\) X31150, \(2\) X4885 - \(5\) X31209, \(4\) X4885 - \(5\) X31250, X4885 - \(3\) X44567, \(4\) X4885 - \(3\) X45320, \(9\) X4893 + X4979, \(5\) X4895 - \(3\) X4959, X4932 - \(3\) X45313, \(3\) X4944 + \(2\) X4976, \(2\) X4949 + \(3\) X4984, \(3\) X6546 + X16892, X6590 - \(6\) X14425, X6608 + \(3\) X14392, X7192 - \(5\) X27013, \(4\) X7653 - \(3\) X31148, \(4\) X7658 - X21104, X7659 - \(4\) X9508, \(3\) X10196 + X21196, \(3\) X11193 - \(2\) X11934, \(3\) X11193 - \(4\) X17115, X13401 + \(2\) X14298, X13401 + \(4\) X40137, X14300 + \(2\) X40137, \(3\) X14395 - X36054, \(3\) X14404 - X20983, \(6\) X14425 + X45745, X17494 - \(5\) X26777, \(3\) X17494 + X26824, \(3\) X17494 + \(5\) X26985, X17494 + \(7\) X27115, X17494 - \(3\) X31150, X17494 + \(5\) X31209, \(2\) X17494 + \(5\) X31250, X17494 + \(4\) X31287, X17494 + \(6\) X44567, \(2\) X17494 + \(3\) X45320, \(2\) X21188 - \(3\) X41800, X21222 - \(3\) X44550, \(3\) X21297 - \(7\) X27138, \(2\) X23813 - \(5\) X30835, \(5\) X24924 - \(7\) X31207, X25259 + \(3\) X27486, X25259 - \(3\) X30565, \(15\) X26777 + X26824, \(3\) X26777 + X26985, \(5\) X26777 + \(7\) X27115, \(5\) X26777 - \(3\) X31150, \(2\) X26777 + X31250, \(5\) X26777 + \(4\) X31287, \(5\) X26777 + \(6\) X44567, \(10\) X26777 + \(3\) X45320, X26824 - \(5\) X26985, X26824 - \(21\) X27115, X26824 + \(9\) X31150, X26824 - \(15\) X31209, \(2\) X26824 - \(15\) X31250, X26824 - \(12\) X31287, X26824 - \(18\) X44567, \(2\) X26824 - \(9\) X45320, \(5\) X26985 - \(21\) X27115, \(5\) X26985 + \(9\) X31150, X26985 - \(3\) X31209, \(2\) X26985 - \(3\) X31250, \(5\) X26985 - \(12\) X31287, \(5\) X26985 - \(18\) X44567, \(10\) X26985 - \(9\) X45320, \(7\) X27115 + \(3\) X31150, \(7\) X27115 - \(5\) X31209, \(14\) X27115 - \(5\) X31250, \(7\) X27115 - \(4\) X31287, \(7\) X27115 - \(6\) X44567, \(14\) X27115 - \(3\) X45320, \(3\) X31150 + \(5\) X31209, \(6\) X31150 + \(5\) X31250, \(3\) X31150 + \(4\) X31287, X31150 + \(2\) X44567, \(2\) X31150 + X45320, \(5\) X31209 - \(4\) X31287, \(5\) X31209 - \(6\) X44567, \(10\) X31209 - \(3\) X45320, \(5\) X31250 - \(8\) X31287, \(5\) X31250 - \(12\) X44567, \(5\) X31250 - \(3\) X45320, \(4\) X31286 - X43067, \(2\) X31287 - \(3\) X44567, \(8\) X31287 - \(3\) X45320, \(3\) X38238 - \(2\) X43931, \(4\) X44567 - X45320, X45669 + \(2\) X45670

X650 lies on the GEOS circle, the cubic K925.

▸ Incident Central Lines251 lines

{1, 1643}, {2, 693}, {3, 8760}, {6, 2423}, {9, 15737}, {10, 21721}, {11, 1566}, {19, 2432}, {20, 8142}, {35, 11247}, {37, 4024}, {39, 7626}, {42, 21727}, {44, 513}, {45, 24457}, {55, 884}, {56, 9373}, {65, 1938}, {75, 21438}, {88, 37131}, {100, 919}, {101, 2222}, {105, 43079}, {108, 40116}, {110, 9090}, {111, 2752}, {112, 2766}, {115, 5520}, {123, 38972}, {141, 9015}, {226, 23806}, {230, 231}, {241, 514}, {244, 38375}, {354, 9443}, {512, 2499}, {518, 5098}, {521, 1021}, {522, 1639}, {644, 5548}, {651, 7045}, {663, 861}, {666, 4998}, {667, 4705}, {812, 3835}, {814, 21051}, {824, 3666}, {830, 3803}, {876, 23768}, {885, 5218}, {900, 14321}, {918, 4025}, {926, 2488}, {949, 23696}, {1015, 4534}, {1022, 39963}, {1027, 3126}, {1040, 41795}, {1054, 39344}, {1084, 35079}, {1086, 24198}, {1146, 7117}, {1212, 21132}, {1376, 5452}, {1415, 1783}, {1418, 23730}, {1427, 23727}, {1459, 24532}, {1577, 23882}, {1734, 3309}, {1758, 21189}, {1814, 25954}, {1919, 38469}, {1946, 2202}, {1960, 4770}, {1980, 5040}, {2170, 33646}, {2174, 21860}, {2276, 4448}, {2291, 2717}, {2457, 2529}, {2517, 26080}, {2520, 6139}, {2523, 2527}, {2532, 6371}, {2605, 17412}, {2646, 2649}, {2820, 15599}, {3035, 15914}, {3057, 9366}, {3119, 7004}, {3122, 45743}, {3210, 25271}, {3246, 39308}, {3250, 4083}, {3251, 4825}, {3261, 24622}, {3569, 32126}, {3570, 42717}, {3572, 16606}, {3667, 4773}, {3699, 36801}, {3730, 7634}, {3739, 4411}, {3746, 32195}, {3752, 6546}, {3762, 45671}, {3798, 4897}, {3837, 25126}, {3887, 4794}, {3904, 28938}, {3907, 4147}, {3910, 6332}, {3975, 4391}, {4063, 14349}, {4120, 4926}, {4129, 29013}, {4132, 42664}, {4140, 4397}, {4142, 23877}, {4160, 30234}, {4163, 44729}, {4171, 42312}, {4367, 4490}, {4370, 35129}, {4378, 14419}, {4379, 24924}, {4380, 4776}, {4382, 4728}, {4449, 17427}, {4455, 8640}, {4462, 17496}, {4467, 25259}, {4474, 14430}, {4481, 18197}, {4498, 8712}, {4500, 44307}, {4546, 8710}, {4551, 35326}, {4554, 30610}, {4562, 9362}, {4730, 4775}, {4751, 4828}, {4785, 45315}, {4791, 45664}, {4802, 4988}, {4806, 29328}, {4834, 4983}, {4838, 28165}, {4843, 4990}, {4850, 31992}, {4927, 44432}, {4931, 28205}, {4932, 28840}, {4949, 4984}, {4962, 14350}, {4995, 21795}, {5190, 13999}, {5432, 15584}, {5514, 10017}, {5540, 34460}, {6004, 8659}, {6164, 21893}, {6174, 6184}, {6367, 42653}, {6506, 8735}, {6545, 16602}, {6615, 14418}, {6666, 23810}, {7192, 16751}, {7212, 26146}, {7642, 10567}, {7650, 21960}, {7653, 31148}, {8056, 37626}, {8632, 21901}, {8642, 23687}, {9010, 14404}, {9013, 15990}, {9320, 20683}, {9355, 9357}, {9364, 20980}, {9590, 39227}, {10164, 40606}, {11502, 30706}, {11672, 35083}, {13259, 45695}, {13405, 14746}, {13609, 38357}, {14296, 20906}, {14475, 31197}, {14735, 17355}, {14749, 40942}, {14812, 16670}, {14935, 40062}, {15313, 17796}, {16592, 41180}, {16601, 21201}, {16706, 25603}, {16757, 26248}, {16975, 30583}, {17072, 29051}, {17161, 28606}, {17780, 42723}, {17924, 37799}, {17926, 44426}, {18004, 29078}, {18108, 26249}, {20316, 24718}, {20954, 27293}, {21052, 25637}, {21053, 29274}, {21105, 40133}, {21183, 44902}, {21192, 23875}, {21222, 44550}, {21260, 29070}, {21297, 27138}, {21758, 39521}, {22091, 44408}, {23100, 24774}, {23758, 28151}, {23972, 35116}, {24002, 37757}, {24098, 25067}, {24115, 25091}, {24141, 25099}, {24430, 41796}, {24484, 34583}, {24720, 25380}, {24789, 24793}, {25900, 25955}, {27009, 40619}, {27345, 28758}, {28161, 40500}, {28292, 38324}, {28798, 36796}, {28851, 45674}, {28867, 45679}, {29226, 40464}, {30023, 42327}, {30764, 30865}, {31615, 31628}, {32688, 40097}, {33573, 35015}, {34591, 38345}, {35091, 35508}, {36067, 40117}, {37998, 42322}, {40131, 42758}, {45669, 45670}

▸ Functional Relations46 relations

Notes

X650 is the perspector of triangle ABC and the tangential triangle of the Feuerbach hyperbola. (Randy Hutson, 9/23/2011)

Let T1, T2, T3 denote the intouch, extouch,and incentral triangles. Let T4 be the side triangle of T2 and T3; T5 that of T3 and T1, and T6 that of T1 and T2. Then X650 is the perspector of triangle ABC and T4, of ABC and T5, and of ABC and T6. (Randy Hutson, 9/23/2011)

X650 is the point of intersection of orthic axis, antiorthic axis and Gergonne line, these being the trilinear polars of X4, X1 and X7, respectively. More generally, X650 is the intersection of the trilinear polars of every pair of points on the Feuerbach hyperbola. (Randy Hutson, December 26, 2015)