Answer:
The two undefined geometric terms which always describe figures with no beginning or end is:
a line and a plane
Explanation:
Point--
It is a geometric term. It is just a location.
Also,it is represented by a dot.
This means it does not has a infinite extension.
Hence, we could say it has both a beginning and end point.
Line--
It is also a geometric term.
It is defined as a line of points and it extends infinitely in both the direction which means it has neither a beginning point nor a end point.
Plane--
It is again a geometric term.
It also extends infinitely in a two dimensional space.
Hence , it has no beginning or end.