Line should be renamed to LineSegment, and a new Infinite Line class should be created.

[andrewheumann]

Many operations in Elements would benefit from an underlying "Infinite Line" construct with its own intersection logic (See ExtendTo, TrimTo, etc). This should really be a class called "Line" and the current Line Class should be renamed to LineSegment for clarity.

[ikeough]

In 2.0, we've made this behavior possible. Line is now treated as a LineSegment and the InfiniteLine class represents an infinite line. It's not the best solution, but it's the least impactful.