Yes. In fact, if they are not the same plane, then they must intersect in a unique straight line.
In order to draw a straight line, two unique ordered pairs are needed. This is because two unique points determine a line and an ordered pair represents a point.
Yes. If it is not straight, then it is not a line.
Yes, it has to be straight or it is not a line.
If it is not straight, then it is not a line.
Displacement of a straight line is zero...
it just a straight line
A straight line has no vertex.
The length (distance) of a straight line always changes, the angle of a straight line is 180 degrees.
The word straight does have an antonym, which is crooked. So perhaps a crooked line is the opposite of a straight line.
There are 180 degrees on a straight line.
A line that goes straight acrosswould be ahorizontal line.