27. Benjamin Warren. Circles Centered at Vertices of Triangles, pp. 200-204..pdf
26. Benjamin Warren. A Property of Certain Triangles Involving the Nine Point Circle, pp. 197-199..pdf
25. Benjamin Warren. Generalization of the Gergonne Point, pp. 191-196..pdf
24. Benjamin Warren. On The Concurrency of Four Circles and a Conic Section, pp. 186-190..pdf
23. Benjamin Warren. Generalization of the Exeter Point, pp. 179-185..pdf
22. Benjamin Warren. Generalization of the Euler Line of a Quadrilateral, pp. 174-178..pdf
21. Benjamin Warren. Generalization of the Euler and Nagel Lines, pp. 167-173..pdf
20. Benjamin Warren. The Midpoint of the Diagonal Intersection and the Midpoint Intersection in a Quadrilateral, pp. 164-166..pdf
19. Benjamin Warren. Certain Concurrent Lines in a Regular Polygon, pp. 158-163..pdf
18. Benjamin Warren. Certain Concurrent Lines in a Parallelogram, pp. 155-157..pdf