Yes
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It takes exactly 2 distinct points to uniquely define a line, i.e. for any two distinct points, there is a unique line containing them.
== == Through any two points there is exactly one straight line.
A CD, because it exists in our dimension, has three distinct points you can measure therefor it is a cylinder.
In plane geometry there is exactly one straight line through two points. There can be any number of curved lines.
one plane LINE