Historical clue formulations

• Geometry figure — 2024-10-18
• So-called "father of geometry" — 2022-11-13
• Noted figure in Raphael's "The School of Athens" — 2020-01-31
• Who wrote to Ptolemy I "There is no royal road to geometry" — 2015-03-20
• Teacher at Alexandria — 2013-10-06
• Figure in Raphael's "School of Athens" — 2011-12-04
• The Father of Geometry — 2011-11-14
• Author of the "Elements," ca. 300 B.C. — 2008-04-20
• City near Cleveland — 2008-03-12
• Ohio city named for a mathematician — 2008-03-05
• Fundamental figure in geometry — 2007-01-28
• Geometry figure? — 2006-05-21
• Cleveland avenue said to have America's first traffic light, 1914 — 2002-06-01
• "Elements" author — 2002-02-03
• "Elements" writer — 1999-11-05
• Geometer of 300 B.C. — 1998-11-02
• Greek geometer — 1994-06-06