vineri, 21 februarie 2025
miercuri, 19 februarie 2025
Gogeometry, problem 1586
See below the synthetic solution (if using a 30 degs angle may be deemed as synthetic).
duminică, 9 februarie 2025
sâmbătă, 8 februarie 2025
Adventitious angles, https://artofproblemsolving.com/community/c4t48f4h3494669_adventitious_angles_synthetic
For 'double angle lemma' you may see my book 'Rose Thorns - Geometry Gewels'
vineri, 7 februarie 2025
My newest book, problems of angle calculus in poligons
You may find it for purchase at https://ebooks.gil.ro/acasa/203-cactus-bloom-geometry-problems-collection-ebook.html
miercuri, 5 februarie 2025
https://www.facebook.com/photo/?fbid=844548767828287&set=a.408188904797611
A rather difficult synthetic solution:
duminică, 26 ianuarie 2025
https://artofproblemsolving.com/community/c6t48f6h3487462_sad_geometry
A nice solution (synthetic) below
Abonați-vă la:
Postări (Atom)
Geometria Super Top, Dong le Minh https://www.facebook.com/photo?fbid=4516632665291447&set=gm.2394306588006363&idorvanity=830782544358783
Note: I came up with the following proof 53 years ago, during an exam; as the majority of solvers used the 3 concurrent circumcircles of th...
