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88. Stanislaw Majchrzak. On tangents to conic from triangle’s point of view, pp. 544-564..pdfVolume 9 Paper 88
87. Dan Ismailescu, Ganghun Kim and Kay Yeon Lee. On the Properties of Quadrilaterals determined by Triangle Centers, pp. 527-543..pdfVolume 9 Paper 87
86. Nima Sarlak. An analytical proof of Nima's theorem, pp. 524-526..pdfVolume 9 Paper 86
85. Benjamin Warren. The Points of Reflection of the Incenter about the Vertices Lie on the Bevan Circle, pp. 521-523..pdfVolume 9 Paper 85
84. Benjamin Warren. A Circle Theorem Corresponding to Two Distinct Chosen Points in the Plane of a Triangle, pp. 518-520..pdfVolume 9 Paper 84
83. Benjamin Warren. The Circle Centered at the Incenter Which Passes Through the Circumcenter, pp. 515-517..pdfVolume 9 Paper 83
82. Benjamin Warren. The Centroid of a Triangle Lies on a Circle Which is the Same Size as a Certain Circle Passing Through the Incenter of a Triangle, pp. 512-514..pdfVolume 9 Paper 82
81. Benjamin Warren. A Result Related to a Generalization of the Orthocenter, pp. 507-511..pdfVolume 9 Paper 81
80. Benjamin Warren. A New Generalization of the Orthocenter, pp. 502-506..pdfVolume 9 Paper 80
79. Benjamin Warren. Three More Points on the Fuhrmann Circle, pp. 498-501..pdfVolume 9 Paper 79
78. Benjamin Warren. The Incenter Lies on a Circle, pp. 494-497..pdfVolume 9 Paper 78
77. Benjamin Warren. Three Circles that Concur at the Feuerbach Point, pp. 484-493..pdfVolume 9 Paper 77
76. Benjamin Warren. Generalization of a Result Regarding X(104) as a Perspector, pp. 478-483..pdfVolume 9 Paper 76
75. Benjamin Warren. Four Concentric Circles about the Incenter, pp. 474-477..pdfVolume 9 Paper 75
74. Benjamin Warren. Two Parallelograms and a Certain Circle in a Given Triangle, pp. 469-473..pdfVolume 9 Paper 74
73. Benjamin Warren. Two More Circles in a Bottema-type Configuration, pp. 464-468..pdfVolume 9 Paper 73
72. Benjamin Warren. Three Circles That Concur at the Incenter, pp. 461-463..pdfVolume 9 Paper 72
71. Benjamin Warren. Generalization of Van Aubel’s Theorem, pp. 457-460..pdfVolume 9 Paper 71
70. Benjamin Warren. Simple Construction of a Cleaver, pp. 454-456..pdfVolume 9 Paper 70
69. Benjamin Warren. Simple Construction of a Splitter, pp. 452-453..pdfVolume 9 Paper 69
68. Benjamin Warren. Three Congruent Circles, Six Parallel Lines, X(104), and a New Construction of the Intouch Triangle, pp. 441-451..pdfVolume 9 Paper 68
67. Benjamin Warren. Generalization of the Ellipse Formed by Six Circumcenters of a Triangle Vertex, the Cevian Point, and the Circumcevian triangle, pp. 437-440..pdfVolume 9 Paper 67
66. Benjamin Warren. Tangents Through Four Points on a Conic Section, pp. 425-436..pdfVolume 9 Paper 66
65. Benjamin Warren. The Circumcenters of the Two Triangles and Two Similar Rectangles Joined at a Vertex are Concyclic, pp. 422-424..pdfVolume 9 Paper 65
64. Benjamin Warren. On The Line Connecting the Centroid of Three Points, a Fourth Point, and the Centroid of the Four Points, pp. 415-421..pdfVolume 9 Paper 64
63. Benjamin Warren. A Perspector Involving Three Arbitrary Points on the Sides of a Triangle, pp. 413-414..pdfVolume 9 Paper 63
62. Benjamin Warren. Semicircles Erected on the sides of a Triangle, pp. 411-412..pdfVolume 9 Paper 62
61. Benjamin Warren. Another Perspector Regarding the Centroids of the Six Triangles Dissected by Concurrent Cevians, pp. 407-410..pdfVolume 9 Paper 61
60. Benjamin Warren. The Midpoints of the Centroids of the Six Triangles Dissected by Concurrent Cevians are in Perspective with the Triangle, pp. 403-406..pdfVolume 9 Paper 60
59. Benjamin Warren. Another Perspector of the Antiorthocevian Triangle, pp. 399-402..pdfVolume 9 Paper 59
58. Benjamin Warren. A Third and Fourth Circle Passing Through the Bottema Point, pp. 396-398..pdfVolume 9 Paper 58
57. Benjamin Warren. A Circle Passing Through the Bottema Point and a Circle Centered at the Bottema Point, pp. 393-395..pdfVolume 9 Paper 57
56. Benjamin Warren. The Bottema Point Lies on a Circle, pp. 389-392..pdfVolume 9 Paper 56
55. Benjamin Warren. Concurrent Lines at an Altitude, pp. 387-388..pdfVolume 9 Paper 55
54. Benjamin Warren. A Circle Whose Center is the Circumcenter, pp. 384-386..pdfVolume 9 Paper 54
53. Benjamin Warren. A Detail Regarding the Midpoint of the Midpoints of the Diagonals of a Quadrilateral, pp. 381-383..pdfVolume 9 Paper 53
52. Benjamin Warren. A Fourth Point on a Certain Generalized Euler Line, pp. 374-380..pdfVolume 9 Paper 52
51. Benjamin Warren. The Line Passing Through the Centroid and the Cevian Point, pp. 370-373..pdfVolume 9 Paper 51
50. Benjamin Warren. The Midpoint of the Circumcenter and the Cevian Point, pp. 366-369..pdfVolume 9 Paper 50
49. Benjamin Warren. Twin Circles in a Complete Quadrilateral, pp. 363-365..pdfVolume 9 Paper 49
48. Benjamin Warren. Equilateral Triangles Formed from Equilateral Triangles Erected on Triangles, pp. 352-362..pdfVolume 9 Paper 48
47. Benjamin Warren. Short Proof of a Theorem of Rigby, pp. 351..pdfVolume 9 Paper 47
46. Benjamin Warren. The Cevian Point as a Radical Center, pp. 346-350..pdfVolume 9 Paper 46
45. Benjamin Warren. Generalization of the Perspector of the Circumcevian and Antiorthocevian Triangles, pp. 337-345..pdfVolume 9 Paper 45
44. Benjamin Warren. Three Concurrent Circles in Reference to Three Nonconcurrent Cevians, pp. 332-336..pdfVolume 9 Paper 44
43. Benjamin Warren. Generalization of the Dao-Humenberger-Schuppar-De Villiers Theorem, pp. 290-331..pdfVolume 9 Paper 43
42. Benjamin Warren. Generalization of the Orthocenter, pp. 285-289..pdfVolume 9 Paper 42
41. Benjamin Warren. Certain Concurrent Circles in a Complete Quadrilateral, pp. 274-284..pdfVolume 9 Paper 41
40. Benjamin Warren. The Orthocenter is the Power Center of Three Certain Circles, pp. 271-273..pdfVolume 9 Paper 40
39. Benjamin Warren. Five Concurrent Circles Formed from Two Cevians, pp. 264-270..pdfVolume 9 Paper 39
38. Benjamin Warren. Generalization of the Nagel Point, pp. 259-263..pdfVolume 9 Paper 38
37. Benjamin Warren. The Perspector of the Circumcevian and Antiorthocevian Triangles, pp. 255-258..pdfVolume 9 Paper 37
36. Benjamin Warren. Generalization of the Mittenpunkt, pp. 249-254..pdfVolume 9 Paper 36
35. Benjamin Warren. Generalization of Schiffler’s Theorem, pp. 242-248..pdfVolume 9 Paper 35
34. Benjamin Warren. Three Lines Associated to Non-concurrent Cevians, pp. 238-241..pdfVolume 9 Paper 34
33. Benjamin Warren. A Generalization of Commandino’s Theorem, pp. 234-237..pdfVolume 9 Paper 33
32. Benjamin Warren. The Seven Circumcenters Theorem, pp. 230-233..pdfVolume 9 Paper 32
31. Benjamin Warren. On Certain Circles in Reference to a Triangle, pp. 225-229..pdfVolume 9 Paper 31
30. Benjamin Warren. A Seven Circumcenters Theorem, pp. 221-224..pdfVolume 9 Paper 30
29. Benjamin Warren. Generalization of the Circumcenter, Exeter Point, and Euler Line, pp. 212-220..pdfVolume 9 Paper 29
28. Benjamin Warren. Generalization of the Jha-Savaran Theorem, pp. 205-211..pdfVolume 9 Paper 28
27. Benjamin Warren. Circles Centered at Vertices of Triangles, pp. 200-204..pdfVolume 9 Paper 27
26. Benjamin Warren. A Property of Certain Triangles Involving the Nine Point Circle, pp. 197-199..pdfVolume 9 Paper 26
25. Benjamin Warren. Generalization of the Gergonne Point, pp. 191-196..pdfVolume 9 Paper 25
24. Benjamin Warren. On The Concurrency of Four Circles and a Conic Section, pp. 186-190..pdfVolume 9 Paper 24
23. Benjamin Warren. Generalization of the Exeter Point, pp. 179-185..pdfVolume 9 Paper 23
22. Benjamin Warren. Generalization of the Euler Line of a Quadrilateral, pp. 174-178..pdfVolume 9 Paper 22
21. Benjamin Warren. Generalization of the Euler and Nagel Lines, pp. 167-173..pdfVolume 9 Paper 21
20. Benjamin Warren. The Midpoint of the Diagonal Intersection and the Midpoint Intersection in a Quadrilateral, pp. 164-166..pdfVolume 9 Paper 20
19. Benjamin Warren. Certain Concurrent Lines in a Regular Polygon, pp. 158-163..pdfVolume 9 Paper 19
18. Benjamin Warren. Certain Concurrent Lines in a Parallelogram, pp. 155-157..pdfVolume 9 Paper 18
17.Benjamin Warren. A Generalization of Dao’s Theorem, pp. 88-154..pdfVolume 9 Paper 17
16. Benjamin Warren. Generalization of a Result about a Certain Point on the Nine Point Circle, pp. 82-87..pdfVolume 9 Paper 16
15. Benjamin Warren. An Extension of the Van Lamoen Circle, pp. 78-81..pdfVolume 9 Paper 15
14. Benjamin Warren. Further Generalization of a Result about Concurrent Newton Lines, pp. 54-77..pdfVolume 9 Paper 14
13. Benjamin Warren. Generalization of the Triangle Centroid and the Van Lamoen Circle, pp. 44-53..pdfVolume 9 Paper 13
12. Benjamin Warren. Generalization of a Result about Concurrent Newton Lines Formed from Regular Polygons, pp. 41-43..pdfVolume 9 Paper 12
11. Benjamin Warren. The Newton Lines of Three Certain Quadrilaterals Formed from a Triangle are Concurrent, pp. 38-40..pdfVolume 9 Paper 11
10. Benjamin Warren. The Newton Lines of the Quadrilaterals which Dissect a Regular n-gon by a Vertex and the Adjacent Vertex Midpoints are Concurrent, pp. 35-37..pdfVolume 9 Paper 10
9. Benjamin Warren. Concurrence of Three Newton Lines, pp. 32-34..pdfVolume 9 Paper 9
8. Nima Sarlak. Discovery of a property in 3-orthoschemes using computer, pp. 30-31..pdfVolume 9 Paper 8
7. Benjamin Warren. The Diagonal Intersection Lies on the Radical Line of Two Certain Circles in a Quadrilateral, pp. 26-29..pdfVolume 9 Paper 7
6. Benjamin Warren. More on the Circles Which are Centered at Vertices of a Triangle and Passing Through the Rest of the Vertices, pp. 23-25..pdfVolume 9 Paper 6
5. Benjamin Warren. The Midpoints of the Vertices and the Midpoints Between the Vertices and the Circumcenter Lie on the Same Conic, pp. 20-22..pdfVolume 9 Paper 5
4. Benjamin Warren. On a Certain Permutation Ellipse, pp. 16-19..pdfVolume 9 Paper 4
3. Benjamin Warren. The Midpoint of the Midpoints of the Diagonals of a Quadrilateral, pp. 12-15..pdfVolume 9 Paper 3
2. Benjamin Warren. The Ellipses that Pass Through a Triangle Vertex Whose Foci are the Other Two Vertices, pp. 9-11..pdfVolume 9 Paper 2
1. Samuel Porritt. On a pair of twin conics, pp. 1-8..pdfVolume 9 Paper 1
Volume 9.1.pdfVolume 9 Content
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