- - ancient greek mathematician, often referred to as the father of geometry
- - Ancient Greece's "father of geometry"
- - you see i was led to study geometry
- - greek geometry giant
- - greek mathematician known as the "father of geometry"
- - Greek mathematician, founder of geometry
- - Noted figure in Raphael's "The School of Athens"
- - Greek geometry master
- - Geometry pioneer
- - Greek mathematician considered the father of geometry
- - The "Father of Geometry"
- - "Father of Geometry"
- - Geometry giant
- - Who wrote to Ptolemy I 'There is no royal road to geometry'
- - Big name in ancient geometry
- - Figure in Raphael's "School of Athens"
- - Fundamental figure in geometry
- - Big name in geometry circles
- - Geometry figure?
- - Big name in geometry
- - greek mathematician of alexandria who authored the work elements
- - Revised clue I had for Greek geometrician
- - signal sent back by top greek mathematician
- - Geometrician gives leaders of European Union countries some cover
- - Signal over top mathematician
- - Mathematician gets Dulcie confused
- - who "alone has looked on beauty bare," according to edna st. vincent millay
- - mathematician i clued differently
- - he knew where to draw the line
- - Scholar who knew all the angles?
- - Greek teacher who knew all the angles?
- - Greek mathematician, 3rd century BC
- - Geometrician of the 3rd century BC
- - 6 mathematician
- - "Elements" mathematician
- - Greek mathematician
- - Community police department arrest lecturer, famous among students of mathematics
- - Great Greek mathematician
- - Suggestion backed top mathematician
- - Greek geometrician
- - University College may be accepted by reformed idle mathematician
- - Noted geometer
- - Geometer who wrote 'Optics'
- - 'Elements' writer
- - Bad clue I had for mathematician
- - Old Greek geometrician
- - Master of lengths and angles put cue back with cover on
- - Rising, tip hat as old mathematician appears
- - Parallel postulate proponent
- - Teacher at Alexandria
- - Greek math whiz
- - Ancient Greek mathematician whose work inspired this puzzle
- - Ohio city named for a mathematician
- - Author of the "Elements," ca. 300 B.C.
- - "Elements" author
- - He knew all the angles
- - Greek mathematician who wrote the "Elements"
- - Geometric man
- - Cleveland avenue said to have America's first traffic light, 1914
- - Geometer of 300 B.C.
- - Early geometer
- - Greek geometer
- - Great Greek geometrician
- - Classical geometer
- - Great geometrician
- - Great Greek geometer
- - Ancient Greek mathematician
- - Famed geometrist.
- - Cleveland's main avenue.
- - Genius of 300 B. C.
- - Greek geometric genius.
- - City near Cleveland
- - Cleveland suburb
- - City on Lake Erie
- - Number theory pioneer
- - Great Greek.
- - Ancient Greek geometrician
- - cryptic clue i had for mathematician
- - Mathematician of 81 died
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