Origin of Invented Words Equal Sign =
About the history, origins, and definitions of the invented word equal sign =.
ORIGINS OF INVENTED WORDS
Equal (=) sign - The sign of equality in mathematics, two parallel lines, was invented by English mathematician Robert Recorde (1510?
-1558) in his algebra text The Whetstone of Witte (1557). As Recorde explained, "No 2 thynges can be more equalle than 2 parallel straight lines."
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