X651

TRILINEAR POLE OF LINE X1X_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) { 6, 7 }: Central Line L(6, 7) { 9, 77 }: Central Line L(9, 77) { 21, 73 }: Central Line L(21, 73) { 57, 88 }: Central Line L(57, 88) { 100, 109 }: Central Line L(100, 109) { 108, 110 }: Central Line L(108, 110) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) X_650 = CROSSDIFFERENCE OF X(1) AND X(3) (13.7143, -4.1991) X_6 = SYMMEDIAN POINT (LEMOINE POINT, GREBE POINT) (0.6000, 0.2672) X_7 = GERGONNE POINT (0.5903, 0.2769) X_9 = MITTENPUNKT (0.5110, 0.1615) X_77 = ISOGONAL CONJUGATE OF X(33) (0.5270, 0.1305) X_21 = SCHIFFLER POINT (0.5287, 0.1771) X_73 = CROSSPOINT OF INCENTER AND CIRCUMCENTER (0.5487, 0.1428) X_57 = ISOGONAL CONJUGATE OF X(9) (0.6138, 0.3110) X_88 = ISOGONAL CONJUGATE OF X(44) (1.0000, 0.0000) X_100 = ANTICOMPLEMENT OF FEUERBACH POINT (0.1429, 0.4666) X_109 = Ψ(INCENTER, CIRCUMCENTER) (0.3636, 0.5938) X_108 = Ψ(CIRCUMCENTER, INCENTER) (0.5320, 0.6114) X_110 = FOCUS OF KIEPERT PARABOLA (0.2516, 0.5478) X_651 = TRILINEAR POLE OF LINE X(1)X(3) (0.3048, 0.5599) A B C X650 X6 X7 X9 X77 X21 X73 X57 X88 X100 X109 X108 X110 X651 (a, b, c) = (5, 6, 7) | AB = 1

X651 (TRILINEAR POLE OF LINE X1X_3) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

Constructed Elements

Trilinears: \(1/(\cos B - \cos C) : 1/(\cos C - \cos A) : 1/(\cos A - \cos B)\)
Barycentrics: \((\sin A)/(\cos B - \cos C) : (\sin B)/(\cos C - \cos A) : (\sin C)/(\cos A - \cos B)\)
Search Value (6, 9, 13): \(0.346887269147\)
▸ Alternate Coordinates2 forms
  • Trilinears: \(1/[(b - c)(b + c - a)] : 1/[(c - a)(c + a - b)] : 1[(a - b)(a + b - c)]\)

  • Barycentrics: \(a/[(b - c)(b + c - a)] : b/[(c - a)(c + a - b)] : c/[(a - b)(a + b - c)]\)

▸ Linear Combinations1 combination
  • X651 = \(3\) X2 - \(4\) X36949, \(4\) X692 - \(3\) X35280, \(2\) X1633 - \(3\) X35280, \(4\) X36949 - X37781

X651 lies on the MacBeath circumconic.

▸ Incident Central Lines476 lines

{1, 1156}, {2, 222}, {3, 23707}, {4, 3157}, {5, 23070}, {6, 7}, {8, 221}, {9, 77}, {10, 34043}, {12, 8614}, {20, 7078}, {21, 73}, {30, 23071}, {34, 3868}, {37, 1442}, {40, 38674}, {43, 9316}, {44, 241}, {56, 19245}, {57, 88}, {59, 513}, {63, 223}, {65, 895}, {69, 478}, {72, 4296}, {75, 28968}, {78, 1394}, {79, 35197}, {80, 6126}, {81, 226}, {85, 3758}, {92, 2988}, {99, 32038}, {100, 109}, {101, 934}, {104, 34586}, {105, 1362}, {108, 110}, {112, 13395}, {141, 28780}, {144, 219}, {145, 34040}, {153, 15501}, {155, 1068}, {169, 2002}, {172, 28391}, {175, 1335}, {176, 1124}, {190, 644}, {193, 608}, {198, 1804}, {200, 34033}, {212, 7411}, {213, 7176}, {218, 279}, {220, 3160}, {225, 3193}, {238, 1458}, {239, 40862}, {255, 411}, {269, 1445}, {273, 2989}, {278, 1993}, {281, 5942}, {287, 894}, {307, 2287}, {312, 28997}, {321, 1943}, {323, 6357}, {329, 394}, {344, 28965}, {348, 37214}, {349, 37219}, {377, 19349}, {401, 44354}, {404, 603}, {481, 3301}, {482, 3299}, {500, 943}, {514, 655}, {518, 1456}, {521, 677}, {523, 21784}, {527, 2323}, {545, 41803}, {559, 7126}, {604, 1423}, {610, 7013}, {611, 4307}, {613, 4310}, {645, 799}, {648, 823}, {650, 7045}, {653, 1783}, {658, 1638}, {660, 6163}, {662, 1414}, {666, 1275}, {668, 6648}, {850, 43189}, {851, 17975}, {857, 3330}, {896, 1758}, {899, 9364}, {905, 1262}, {906, 32651}, {908, 22128}, {912, 1870}, {919, 6183}, {920, 1079}, {927, 8693}, {932, 29055}, {940, 5226}, {961, 17946}, {971, 3100}, {978, 1106}, {1000, 1480}, {1014, 1400}, {1018, 4606}, {1026, 4578}, {1030, 7279}, {1035, 1259}, {1037, 7083}, {1038, 3876}, {1040, 11220}, {1042, 5247}, {1046, 1254}, {1066, 3073}, {1069, 38295}, {1082, 19551}, {1100, 7269}, {1103, 2956}, {1110, 4905}, {1119, 3211}, {1170, 10481}, {1172, 7282}, {1190, 3599}, {1191, 4308}, {1201, 1476}, {1203, 4298}, {1214, 2349}, {1231, 37220}, {1252, 43049}, {1253, 1742}, {1305, 36080}, {1310, 8687}, {1319, 3246}, {1323, 5526}, {1386, 8581}, {1396, 40571}, {1398, 42461}, {1402, 37132}, {1404, 1429}, {1406, 1788}, {1407, 4383}, {1413, 27383}, {1418, 16669}, {1421, 3315}, {1424, 41526}, {1425, 29958}, {1427, 4641}, {1428, 1463}, {1431, 43763}, {1440, 27508}, {1444, 40590}, {1447, 33854}, {1449, 7190}, {1455, 4511}, {1465, 3218}, {1471, 4334}, {1498, 6223}, {1616, 6049}, {1617, 17127}, {1625, 40518}, {1654, 40999}, {1718, 11570}, {1723, 4341}, {1724, 4306}, {1757, 5018}, {1762, 37755}, {1768, 24025}, {1776, 8758}, {1812, 33066}, {1817, 40152}, {1818, 23693}, {1876, 34381}, {1880, 2987}, {1897, 13138}, {1936, 2635}, {1944, 30807}, {1958, 2199}, {1992, 6604}, {1994, 17483}, {2122, 7080}, {2124, 36973}, {2149, 36087}, {2161, 7202}, {2182, 7291}, {2183, 11349}, {2222, 4588}, {2261, 7289}, {2263, 3751}, {2265, 3942}, {2283, 4557}, {2286, 17257}, {2293, 2346}, {2295, 40765}, {2298, 7261}, {2317, 18162}, {2324, 34488}, {2348, 34855}, {2427, 23113}, {2428, 35312}, {2550, 45729}, {2580, 8115}, {2581, 8116}, {2639, 32320}, {2647, 2648}, {2720, 9058}, {2808, 3270}, {2895, 26942}, {2911, 41563}, {2975, 10571}, {2982, 21907}, {2986, 40149}, {3000, 9441}, {3008, 30379}, {3013, 8287}, {3074, 4303}, {3075, 6915}, {3091, 41344}, {3149, 23072}, {3215, 35976}, {3240, 37541}, {3248, 36267}, {3257, 3669}, {3292, 41349}, {3297, 17805}, {3298, 17802}, {3468, 44706}, {3487, 36742}, {3570, 4598}, {3573, 4499}, {3580, 37799}, {3600, 16466}, {3616, 34046}, {3638, 5357}, {3639, 5353}, {3660, 7292}, {3664, 21617}, {3668, 41572}, {3674, 5280}, {3676, 5375}, {3681, 8270}, {3684, 6168}, {3713, 32099}, {3759, 39126}, {3770, 34388}, {3784, 19649}, {3869, 21147}, {3873, 34036}, {3908, 40521}, {3911, 37222}, {3928, 36636}, {3945, 8232}, {3947, 37559}, {3952, 14594}, {3955, 4220}, {4014, 5091}, {4017, 37135}, {4032, 21741}, {4192, 22161}, {4219, 9637}, {4223, 45963}, {4224, 26892}, {4228, 20122}, {4253, 38859}, {4315, 5315}, {4321, 16469}, {4327, 16475}, {4328, 16667}, {4329, 22132}, {4331, 24695}, {4347, 5904}, {4350, 16572}, {4391, 6335}, {4417, 28774}, {4513, 25718}, {4556, 37140}, {4572, 37133}, {4584, 37134}, {4604, 5549}, {4607, 4998}, {4627, 4637}, {4649, 16133}, {4654, 43758}, {4715, 36589}, {5047, 37523}, {5120, 27624}, {5125, 5906}, {5219, 26738}, {5232, 5783}, {5236, 9028}, {5257, 24557}, {5260, 37558}, {5261, 5711}, {5276, 7179}, {5278, 27339}, {5279, 30456}, {5291, 43059}, {5328, 25934}, {5452, 7056}, {5703, 36746}, {5707, 5714}, {5744, 22129}, {5758, 37498}, {5782, 29611}, {5811, 17814}, {5848, 21293}, {5889, 41227}, {5932, 27382}, {6127, 10090}, {6147, 36750}, {6198, 40263}, {6326, 11700}, {6354, 18625}, {6505, 34052}, {6510, 43044}, {6603, 43064}, {6606, 32041}, {6646, 17086}, {6733, 43192}, {6909, 22350}, {6996, 20744}, {7004, 13243}, {7071, 42460}, {7074, 9778}, {7100, 35194}, {7191, 17625}, {7339, 14298}, {7352, 37117}, {7460, 23161}, {7580, 22117}, {7673, 12652}, {7952, 11441}, {8125, 34034}, {8126, 34026}, {8271, 30628}, {8540, 20358}, {8652, 26700}, {8732, 37681}, {9310, 34497}, {9317, 21742}, {9359, 36276}, {9446, 20229}, {9776, 10601}, {9809, 38357}, {9945, 22141}, {10025, 20752}, {10755, 25048}, {11573, 37431}, {11678, 34041}, {11679, 34044}, {11680, 34029}, {11681, 34030}, {11682, 34039}, {11685, 34037}, {11686, 34038}, {11687, 34031}, {11688, 34027}, {11690, 34025}, {12709, 17016}, {12738, 33649}, {12831, 45946}, {13149, 14545}, {13257, 15252}, {13397, 15439}, {14074, 14733}, {14100, 30621}, {14315, 23346}, {14511, 39756}, {15066, 31018}, {15251, 38055}, {15253, 33148}, {15507, 36280}, {15726, 41339}, {15906, 36125}, {16577, 33761}, {16610, 37789}, {16732, 18815}, {16948, 37583}, {17075, 17347}, {17077, 17277}, {17095, 17256}, {17120, 41246}, {17134, 22134}, {17234, 28741}, {17332, 41808}, {17335, 31225}, {17346, 33298}, {17349, 27342}, {17353, 23617}, {17379, 26125}, {17615, 34049}, {17796, 43066}, {17811, 18228}, {17950, 20072}, {18134, 28776}, {18230, 25878}, {18239, 40658}, {18624, 37672}, {18629, 20806}, {18631, 22133}, {18632, 23130}, {18743, 28996}, {18750, 28950}, {18771, 43947}, {18816, 40624}, {20245, 23124}, {20277, 24430}, {20348, 23125}, {20921, 28951}, {21189, 24027}, {21367, 44708}, {21859, 36074}, {23131, 23512}, {23541, 33650}, {23585, 23980}, {23704, 27834}, {24035, 44765}, {24149, 30690}, {24237, 24618}, {24341, 28125}, {24470, 37509}, {25737, 30719}, {26001, 44356}, {26006, 40880}, {26580, 26637}, {26657, 26685}, {26668, 27509}, {26842, 34545}, {26884, 33849}, {26890, 37261}, {27540, 37669}, {27994, 34061}, {28370, 41426}, {28606, 45126}, {28979, 33116}, {28999, 42719}, {29000, 42718}, {29353, 40910}, {29497, 38869}, {30572, 36237}, {30625, 34059}, {30684, 31164}, {31019, 37695}, {31231, 37687}, {32674, 36099}, {32736, 36098}, {34045, 35614}, {35466, 37797}, {36040, 36088}, {36049, 37141}, {36067, 43347}, {36075, 37211}, {36084, 43754}, {36092, 44770}, {36905, 39047}, {37516, 41230}, {37543, 37685}, {38459, 43065}, {38948, 45929}, {40443, 40606}, {40861, 44351}, {44112, 44151}, {44350, 44352}

▸ Functional Relations30 relations

Notes

Let E1 and E9 be the circumellipses centered at X1 and X9, respectively. The line tangent to E1 at X100 meets E9 at X651. (Dan Reznik, July 7, 2019)