A straight line other than a line segment which does have end points.
A line segment
The mathematical figure that has length but no beginning or end is a line. In geometry, a line is defined as a straight one-dimensional figure that extends infinitely in both directions. It has no endpoints, allowing it to continue indefinitely, making it distinct from line segments, which have defined starting and ending points.
In a close figure it is the set of points inside the figure.
In terms of Euclidian geometry, no lines have end points. A line segment has end points, as it is a section of a defined line of points.
Triangle: A figure formed by exactly three (non-colinear) points joined by line segments is a triangle. A figure formed by three or more points is generally called a polygon. Of course, if all of the points are co-linear then there is not much of a figure. A polygon has 3 or more sides.
A line segment
If the start and end points of a figure are same, then it is called a closed figure. Examples can be a square or a triangle or a pentagon.
An angle
opposite rays have common end points
polygon
In a convex figure, if you pick any two points, the points between them are also a part of the figure.
In a close figure it is the set of points inside the figure.
a polygon is any nth sided figure closed at all points a line segment is a line that stops at each end
In terms of Euclidian geometry, no lines have end points. A line segment has end points, as it is a section of a defined line of points.
Triangle: A figure formed by exactly three (non-colinear) points joined by line segments is a triangle. A figure formed by three or more points is generally called a polygon. Of course, if all of the points are co-linear then there is not much of a figure. A polygon has 3 or more sides.
The distance from Bucharest to Kuala Lumpur is about 8,620 km (5,360 miles). The figure is different for other choices of start- and end-points.
Four