A straight line other than a line segment which does have end points.
An infinite set can not terminate.
Yes. A line segment is part of a line. It is distinguished by its end points. It contains all the points between its end points. A line segment is a subset of the line it rides.
A line.
ray
A straight line other than a line segment which does have end points.
A circle.
If you mean a straight line that does not extend BEYOND it's two end points, then that would be a 'line segment.'
An infinite set can not terminate.
You had us baffled at "straight curve" . Could you mean if you start at the north pole, walk in a straight line, you will eventually get back to the north pole and round in a circle. Hence a straight line but no end points.
line
a line segment
No because a defined straight line has 2 end points.
A line segment is a straight line with end points
A line.
ray
Yes. A line segment is part of a line. It is distinguished by its end points. It contains all the points between its end points. A line segment is a subset of the line it rides.