X3257
ISOGONAL CONJUGATE OF X1635
5, 6, 7
3, 4, 5
Kepler
Kimberling
< 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)
{ 44, 88 }: Central Line L(44, 88)
{ 106, 238 }: Central Line L(106, 238)
{ 100, 513 }: Central Line L(100, 513)
{ 527, 666 }: Central Line L(527, 666)
{ 320, 908 }: Central Line L(320, 908)
{ 662, 1019 }: Central Line L(662, 1019)
A = Vertex A (0.0000, 0.0000)
B = Vertex B (1.0000, 0.0000)
C = Vertex C (0.6122, 0.5999)
X_1635 = TRIPOLAR CENTROID OF X(1) (2.1429, 2.0996)
X_44 = -LINE CONJUGATE OF X(1) (2.1429, 2.0996)
X_88 = ISOGONAL CONJUGATE OF X(44) (1.0000, 0.0000)
X_106 = Λ(INCENTER, CENTROID) (1.0000, 0.0000)
X_238 = -LINE CONJUGATE OF X(37) (1.6190, 1.4775)
X_100 = ANTICOMPLEMENT OF FEUERBACH POINT (0.1429, 0.4666)
X_513 = ISOGONAL CONJUGATE OF X(100) (1.0529, -0.0806)
X_527 = DIRECTION OF VECTOR AX + BX + CX, where X = X(7) (0.8698, 0.6836)
X_666 = TRILINEAR POLE OF LINE X(2)X(11) (1.0982, 0.1428)
X_320 = ISOTOMIC CONJUGATE OF X(80) (-2.6735, -3.5993)
X_908 = POINT ACUBENS (-0.8367, -1.7996)
X_662 = TRILINEAR POLE OF LINE X(1)X(21) (0.1811, 0.4951)
X_1019 = -CEVA CONJUGATE OF X(1) (-29.0952, 18.1962)
X_3257 = ISOGONAL CONJUGATE OF X(1635) (1.0000, -0.0000)
A
B
C
X1635
X44
X88
X106
X238
X100
X513
X527
X666
X320
X908
X662
X1019
X3257
(a, b, c) = (5, 6, 7) | AB = 1
< 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)
{ 44, 88 }: Central Line L(44, 88)
{ 106, 238 }: Central Line L(106, 238)
{ 100, 513 }: Central Line L(100, 513)
{ 527, 666 }: Central Line L(527, 666)
{ 320, 908 }: Central Line L(320, 908)
{ 662, 1019 }: Central Line L(662, 1019)
A = Vertex A (0.0000, 0.0000)
B = Vertex B (1.0000, 0.0000)
C = Vertex C (0.6400, 0.4800)
X_1635 = TRIPOLAR CENTROID OF X(1) (1.6000, 1.2000)
X_44 = -LINE CONJUGATE OF X(1) (1.6000, 1.2000)
X_88 = ISOGONAL CONJUGATE OF X(44) (1.0000, 0.0000)
X_106 = Λ(INCENTER, CENTROID) (1.0000, 0.0000)
X_238 = -LINE CONJUGATE OF X(37) (1.2667, 0.8667)
X_100 = ANTICOMPLEMENT OF FEUERBACH POINT (0.2000, 0.4000)
X_513 = ISOGONAL CONJUGATE OF X(100) (1.0610, -0.0971)
X_527 = DIRECTION OF VECTOR AX + BX + CX, where X = X(7) (0.8881, 0.6226)
X_666 = TRILINEAR POLE OF LINE X(2)X(11) (1.1272, 0.1723)
X_320 = ISOTOMIC CONJUGATE OF X(80) (-1.5600, -1.9200)
X_908 = POINT ACUBENS (-0.2800, -0.9600)
X_662 = TRILINEAR POLE OF LINE X(1)X(21) (0.2597, 0.4299)
X_1019 = -CEVA CONJUGATE OF X(1) (-11.4000, 7.2000)
X_3257 = ISOGONAL CONJUGATE OF X(1635) (1.0000, -0.0000)
A
B
C
X1635
X44
X88
X106
X238
X100
X513
X527
X666
X320
X908
X662
X1019
X3257
(a, b, c) = (3, 4, 5) | AB = 1
< 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)
{ 44, 88 }: Central Line L(44, 88)
{ 106, 238 }: Central Line L(106, 238)
{ 100, 513 }: Central Line L(100, 513)
{ 527, 666 }: Central Line L(527, 666)
{ 320, 908 }: Central Line L(320, 908)
{ 662, 1019 }: Central Line L(662, 1019)
A = Vertex A (0.0000, 0.0000)
B = Vertex B (1.0000, 0.0000)
C = Vertex C (0.6180, 0.4859)
X_1635 = TRIPOLAR CENTROID OF X(1) (1.8360, 1.1813)
X_44 = -LINE CONJUGATE OF X(1) (1.5111, 1.3165)
X_88 = ISOGONAL CONJUGATE OF X(44) (0.9710, -0.0490)
X_106 = Λ(INCENTER, CENTROID) (0.9957, -0.0651)
X_238 = -LINE CONJUGATE OF X(37) (1.2021, 0.9450)
X_100 = ANTICOMPLEMENT OF FEUERBACH POINT (0.2386, 0.4263)
X_513 = ISOGONAL CONJUGATE OF X(100) (1.0703, -0.0589)
X_527 = DIRECTION OF VECTOR AX + BX + CX, where X = X(7) (0.8397, 0.6523)
X_666 = TRILINEAR POLE OF LINE X(2)X(11) (1.1180, 0.2429)
X_320 = ISOTOMIC CONJUGATE OF X(80) (-1.4042, -2.1471)
X_908 = POINT ACUBENS (-0.1876, -1.0248)
X_662 = TRILINEAR POLE OF LINE X(1)X(21) (0.2938, 0.4492)
X_1019 = -CEVA CONJUGATE OF X(1) (-13.7166, 7.1503)
X_3257 = ISOGONAL CONJUGATE OF X(1635) (1.0290, 0.0975)
A
B
C
X1635
X44
X88
X106
X238
X100
X513
X527
X666
X320
X908
X662
X1019
X3257
Kepler (1, √φ, φ) | AB = 1
< 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)
{ 44, 88 }: Central Line L(44, 88)
{ 106, 238 }: Central Line L(106, 238)
{ 100, 513 }: Central Line L(100, 513)
{ 527, 666 }: Central Line L(527, 666)
{ 320, 908 }: Central Line L(320, 908)
{ 662, 1019 }: Central Line L(662, 1019)
A = Vertex A (0.0000, 0.0000)
B = Vertex B (1.0000, 0.0000)
C = Vertex C (0.6331, 0.2801)
X_1635 = TRIPOLAR CENTROID OF X(1) (1.3278, 0.4768)
X_44 = -LINE CONJUGATE OF X(1) (1.1019, 0.5412)
X_88 = ISOGONAL CONJUGATE OF X(44) (0.9802, -0.0393)
X_106 = Λ(INCENTER, CENTROID) (1.0294, -0.0621)
X_238 = -LINE CONJUGATE OF X(37) (0.9397, 0.4041)
X_100 = ANTICOMPLEMENT OF FEUERBACH POINT (0.3206, 0.2669)
X_513 = ISOGONAL CONJUGATE OF X(100) (1.1753, -0.0865)
X_527 = DIRECTION OF VECTOR AX + BX + CX, where X = X(7) (0.9260, 0.6270)
X_666 = TRILINEAR POLE OF LINE X(2)X(11) (1.0867, 0.1883)
X_320 = ISOTOMIC CONJUGATE OF X(80) (-0.5706, -0.8023)
X_908 = POINT ACUBENS (0.2165, -0.3651)
X_662 = TRILINEAR POLE OF LINE X(1)X(21) (0.3982, 0.2796)
X_1019 = -CEVA CONJUGATE OF X(1) (-4.4509, 1.9411)
X_3257 = ISOGONAL CONJUGATE OF X(1635) (1.0036, 0.0721)
A
B
C
X1635
X44
X88
X106
X238
X100
X513
X527
X666
X320
X908
X662
X1019
X3257
Kimberling (6, 9, 13) | AB = 1
X3257 (ISOGONAL CONJUGATE OF X1635 ) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\) .
Trilinears: \(1/((b - c)(b + c - 2a)) : :\)
Search Value (6, 9, 13): \(-0.773518850939\)
▸ Incident Central Lines9 lines
{44 , 88 }, {100 , 513 }, {106 , 238 }, {320 , 908 }, {527 , 666 }, {658 , 1275 }, {662 , 1019 }, {758 , 1168 }, {897 , 1757 }
▸ Functional Relations9 relations
X3257 = reflection of Xi in Xj for these (i,j): (320 , 908 ), (3218 , 44 )
X3257 = isogonal conjugate of X1635
X3257 = cevapoint of Xi and Xj for these (i,j): (1 , 1635 ), (88 , 1022 ), (100 , 1023 ), (649 , 1149 )
X3257 = Xi -cross conjugate of Xj for these (i,j): (44 , 765 ), (661 , 1168 ), (1022 , 88 ), (1023 , 100 ), (1635 , 1 ), (1769 , 75 )
X3257 = crossdifference of every pair of points on the line X2087 X3251
X3257 = isotomic conjugate of X3762
X3257 = perspector of conic {A , B , C ,PU(28)}
X3257 = intersection of trilinear polars of P(28) and U(28)
X3257 = trilinear pole of line X1 X88
Notes
Let P and Q be the intersections of line BC and circle {X3 ,2R}. Let A' be the circumcenter of triangle PQ X3 , and define B' and C' cyclically. The lines AA' , BB' , CC' concur in X3257 . (Randy Hutson , December 26, 2015)
Let A'B'C' and A″B″C″ be the Ursa-minor and Ursa-major triangles, resp. Let A* be the reflection of A' in line B″C″ , and define B* and C* cyclically. Let A* * be the reflection of A″ in line B'C' , and define B* * and C* * cyclically. Let A# = B*B* */\ C*C* *, and define B# and C# cyclically. The lines AA#, BB#, CC# concur in X3257 . (Randy Hutson, June 27, 2018)