Parallel lines within a circle are infinite.
Cdm
A circle intersected by a pair of parallel lines.
They do not have any specific name.
If you mean a 'parallel' of latitude on the earth, then it is a circle that proceeds east and west from any point on it. There can be any desired number of them, the only specification being that every point on the 'parallel' has the same geographic latitude. Since these are all curved lines, it's hard to say that they are parallel in the same sense as parallel straight lines on a flat surface. But the planes they lie in are all truly parallel planes.
No, parallel lines are straight lines.
No. The circular shape makes it impossible to have parallel lines just as you cannot have parallel lines in a circle that both reach the length of the diameter of the said circle.
No because it is just a circle.
a semi - circle has zero parallel lines
circle
None
None.
Yes it does
Yes a trapezoid has parallel lines
yes it has 2 parallel lines
A cone does not have any parallel lines
An octagon need not have any parallel sides. But it can have any number from 2 to 8 lines that are parallel - in pairs, triplets or quartets.