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  • Thumbnail for Pappus chain
    Ogilvy, C. S. (1990). Excursions in Geometry. Dover. pp. 54–55. ISBN 0-486-26530-7. Bankoff, L. (1981). "How did Pappus do it?". In Klarner, D. A. (ed...
    6 KB (755 words) - 05:57, 16 November 2023
  • Thumbnail for Apollonian circles
     40–43. Ogilvy, C. Stanley (1990), Excursions in Geometry, Dover, ISBN 0-486-26530-7. Weisstein, Eric W. "Coaxal Circles". MathWorld. David B. Surowski:...
    10 KB (1,223 words) - 01:13, 11 March 2024
  • Thumbnail for Arbelos
    Ogilvy, C. S. (1990). Excursions in Geometry. Dover. pp. 51–54. ISBN 0-486-26530-7. Sondow, J. (2013). "The parbelos, a parabolic analog of the arbelos"...
    10 KB (1,047 words) - 01:27, 10 January 2024
  • Thumbnail for Inscribed angle
    Ogilvy, C. S. (1990). Excursions in Geometry. Dover. pp. 17–23. ISBN 0-486-26530-7. Gellert W, Küstner H, Hellwich M, Kästner H (1977). The VNR Concise...
    12 KB (1,321 words) - 00:20, 9 March 2024
  • Thumbnail for Power center (geometry)
    35–40. Ogilvy CS (1990). Excursions in Geometry. Dover. pp. 23. ISBN 0-486-26530-7. Coxeter HSM, Greitzer SL (1967). Geometry Revisited. Washington: MAA...
    5 KB (486 words) - 07:18, 13 May 2024
  • Thumbnail for Peaucellier–Lipkin linkage
    Ogilvy, C. S. (1990), Excursions in Geometry, Dover, pp. 46–48, ISBN 0-486-26530-7 Bryant, John; Sangwin, Chris (2008). How round is your circle? : where...
    13 KB (1,443 words) - 04:53, 21 December 2023
  • names: authors list (link) Ogilvy, C.S. (1990) Excursions in Geometry, Dover. ISBN 0-486-26530-7. Johnson, R.A. (1960) Advanced Euclidean Geometry, Dover....
    15 KB (2,405 words) - 20:03, 2 September 2023
  • Thumbnail for Soddy's hexlet
    Mathematics archive. Ogilvy, C.S. (1990), Excursions in Geometry, Dover, ISBN 0-486-26530-7. Soddy, Frederick (1937), "The bowl of integers and the hexlet", Nature...
    15 KB (2,097 words) - 10:58, 15 October 2023
  • Thumbnail for Steiner chain
    Ogilvy, C. S. (1990). Excursions in Geometry. Dover. pp. 51–54. ISBN 0-486-26530-7. Coxeter, H.S.M.; Greitzer, S.L. (1967). Geometry Revisited. New Mathematical...
    20 KB (2,841 words) - 15:10, 22 March 2023
  • Thumbnail for Power of a point
    (1990), Excursions in Geometry, Dover Publications, pp. 6–23, ISBN 0-486-26530-7 Coxeter H. S. M., Greitzer S. L. (1967), Geometry Revisited, Washington:...
    18 KB (3,450 words) - 13:50, 12 May 2024
  • Thumbnail for Radical axis
    Stanley Ogilvy (1990). Excursions in Geometry. Dover. pp. 17–23. ISBN 0-486-26530-7. H. S. M. Coxeter, S. L. Greitzer (1967). Geometry Revisited. Washington...
    22 KB (4,232 words) - 22:15, 25 March 2024
  • Thumbnail for Problem of Apollonius
     48–51 (Apollonius' problem), 60 (extension to tangent spheres). ISBN 0-486-26530-7. Eisenbud, David and Harris, Joe, 3264 and All That: A Second Course...
    99 KB (12,221 words) - 22:00, 2 May 2024