- AJohn Playfair
- BPythagoras
- CAryabhata
- DThales
Step-by-Step Solution
John Playfair gave the simple equivalent statement (Playfair's axiom) used in place of Euclid's original fifth postulate.
Answer: A) John Playfair
Which famous mathematician proposed the equivalent axiom now taught as a substitute for Euclid's fifth postulate?
Class 9The Fifth PostulateGeometry — Foundations
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