geometry
posted by dipti .
prove that every every line segment has one and only one end point . use euclids geometry to prove

it's false. A line segment is by definition finite in extent. So, it has two end points.
Since a line segment is nondirectional, it makes no sense to call one end point a starting point.
A ray, on the other hand, has one end point, and extends indefinitely from it in a given direction.