A triangle can have no parallel lines.
A pentagon has no parallel lines.
Two lines tangent to a circle at the endpoints of its diameter are parallel. See related link for proof.
A cube has exactly 6 parallel lines.
A cube has exactly 6 parallel lines.
Parallel lines within a circle are infinite.
a semi - circle has zero parallel lines
No, parallel lines are straight lines.
None.
a circle
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
circle
The two points on exactly opposite sides of a circle are parallel to each other. This can be evidenced by finding the derivative/gradient at those points; if they are the same then the two line segments described by those points are parallel.
Cdm
Yes it does
lines of latitude