Category:Definitions/Parallel Lines
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This category contains definitions related to Parallel Lines.
Related results can be found in Category:Parallel Lines.
In the words of Euclid:
- Parallel straight lines are straight lines which, being in the same plane and being produced indefinitely in either direction, do not meet one another in either direction.
(The Elements: Book $\text{I}$: Definition $23$)
The contemporary interpretation of the concept of parallelism declares that a straight line is parallel to itself.
Pages in category "Definitions/Parallel Lines"
The following 2 pages are in this category, out of 2 total.