A segment or curve cannot start and then start again without having stopped!
a point at each side
a ray continues on and on but a line segment stops
No. A line continues forever in both directions. A line segment stops.
Your probably spotting
Yes, a switch is a device that stops and starts current flow in a circuit.
A line segment.
The starter.
a polygon is any nth sided figure closed at all points a line segment is a line that stops at each end
The letter is a capital U
I googled and found... Leg/Segment A leg is that portion of the trip between consecutive flight stops. The segment can be a group of legs, because the segment is that portion of a trip from boarding point to a deplaning point.
Motion which starts and stops regularly.
No, it is not. A chord is a line segment. It cannot have a length of zero. A point has no dimensions. The chord of a circle is a line segment that has its endpoints (both of them) on the curve (or circumference) of the circle.