Abstract
Two results are proved synthetically in Hilbert’s absolute geometry: (i) of all triangles inscribed in a circle, the equilateral one has the greatest area; (ii) of all triangles inscribed in a circle, the equilateral one has the greatest radius of the inscribed circle (which amounts, in the Euclidean case, to Euler’s inequality R≥ 2 r)..
Original language | English (US) |
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Article number | 8 |
Journal | Journal of Geometry |
Volume | 109 |
Issue number | 1 |
DOIs | |
State | Published - Apr 1 2018 |
Keywords
- Absolute plane geometry
- Area
- Euler’s inequality
- Optimization
ASJC Scopus subject areas
- Geometry and Topology