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Euclid's fifth postulate is also famously known as the:

Class 9Euclid's AxiomsGeometry — Foundations
  • AParallel postulate
  • BPoint postulate
  • CCircle postulate
  • DRight-angle postulate

Step-by-Step Solution

The fifth postulate concerns lines meeting when interior angles are less than two right angles; it is equivalent to the parallel postulate.
Answer: A) Parallel postulate

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