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How many points are enough to fix (determine) a unique straight line?

Class 9Euclid's PostulatesGeometry — Foundations
  • A1
  • B2
  • C3
  • DInfinitely many

Step-by-Step Solution

Euclid's first postulate: a straight line may be drawn from any one point to any other point. Two distinct points determine a unique line.
Answer: B) 2

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