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Which of the following correctly describes why Euclid is believed to have postponed using the fifth postulate in his proofs?

Class 9The Fifth PostulateGeometry — Foundations
  • AHe found it less self-evident and tried to manage without it
  • BHe thought it was false
  • CHe had forgotten about it
  • DHe used it only in the very first theorem

Step-by-Step Solution

Because the fifth postulate seemed less obvious than the others, Euclid avoided using it for as long as possible in the Elements.
Answer: A) He found it less self-evident and tried to manage without it

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