Respuesta :
The undefined term should be considered when A line extends both directs between point X and point Y.
What is an undefined term?
In terms of geometry, the undefined term should represent the main object where the rest of the objects should be considered as the line, point, and the plane.
So when there is the line extension that lies between point x and point Y so it should be an undefined term.
Learn more about line here: https://brainly.com/question/2037439