Historical Events
Euclid’s Parallel Postulate
Oxford mathematician John Wallis gives a lecture on Euclid’s parallel postulate, first Western attempt to derive the parallel postulate as a theorem
1663 Highlights
About July 11, 1663
Day of the Week: Wednesday
How Long Ago? 360 years, 9 months and 25 days
Leap Year: No
Star Sign: Cancer
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