New points that belong to the nine-point circle

DOI10.1017/mag.2019.53zbMath1477.51007OpenAlexW2990061812MaRDI QIDQ5860855

David Fraivert

Publication date: 23 November 2021

Published in: The Mathematical Gazette (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1017/mag.2019.53

zbMATH Keywords

cyclic quadrilateralnine-point circlediagonal point triangle

Mathematics Subject Classification ID

Convex sets in (2) dimensions (including convex curves) (52A10) Elementary problems in Euclidean geometries (51M04)

Cites Work

• The IMO compendium. A collection of problems suggested for the International Mathematical Olympiads: 1959--2004
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