An intersection
point I believe the word you're looking for is "intersection". Two non-parallel lines that lie in the same plane will have one point in common where they cross, and that point is the intersection.
yeah
Theorem: If two lines intersect, then exactly one plane contains both lines. So, when two or more lines intersect at one point, they lie exactly in the same plane. When two or more lines intersect at one point, their point of intersection satisfies all equations of those lines. In other words, the equations of these lines have the same solution, which is the point of intersection.
If they are straight lines, then they define a plane in which both lines lie.
If two different lines intersect, they will always intersect at one point.
Two lines can lie in one plane. For example, parallel lines are lines that intersect and lie in the same plane.
Two lines that lie on different planes but are not parallel.
No, two straight lines can intersect at only one point and that is their point of intersection.
the same line
Identical.
they lie in the same plane