wrong!
No, parallel lines never intersect, so they do not have any points in common. Intersecting lines have one common point.
FALSE!!
They are said to be perpendicular lines.
Two lines intersect at one point. If in two dimensions, and they do not intersect they are parallel. The other option in two dimensions is they are the co-linear, that is they are the same line, in which case they intersect at all points.
always
Perpendicular lines are lines that always intersect either at just one point, two points or several more.
No, two straight lines can intersect at only one point and that is their point of intersection.
Point.
always. if two lines intersect, then exactly one plane contains the lines.
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.
wrong!
Perpendicular lines intersect at one point only.
Lines that have one point in common are said to intersect one another at that point. Almost all straight lines of infinite length intersect one another, unless they are parallel to each other.
Not if they are straight lines.
Two lines can intersect at none, one or infinitely many points.
yes