- AFirst postulate
- BThird postulate
- CFourth postulate
- DFifth postulate
Step-by-Step Solution
The first postulate (in modern form) guarantees a unique straight line through two given distinct points — the two stones.
Answer: A) First postulate
A surveyor in Nagpur needs a unique straight boundary between two fixed boundary stones.
Which single Euclid postulate guarantees that exactly one such straight boundary exists?
Class 9Euclid's PostulatesGeometry — Foundations
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