- ACircle postulate
- BParallel postulate
- CRight-angle postulate
- DPoint postulate
Step-by-Step Solution
The fifth postulate, equivalent to the existence/uniqueness of parallels, is known as the parallel postulate.
Answer: B) Parallel postulate
The fifth postulate of Euclid is also called the:
Class 9Euclid's PostulatesGeometry — Foundations
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