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United Kingdom · Famous People · Hard
Which Welsh mathematician and physician invented the equals sign (=) and introduced it in his 1557 algebra textbook?
Answer: Robert Recorde — Robert Recorde introduced the equals sign (=) in The Whetstone of Witte, choosing two parallel lines of the same length because 'no two things can be more equal'.
- A John Dee
- B William Jones
- C Robert Recorde ✓
- D Thomas Harriot
Robert Recorde introduced the equals sign (=) in The Whetstone of Witte, choosing two parallel lines of the same length because 'no two things can be more equal'.