Intersecting Lines. Two lines next to each other but go straight and never meet are called parallel lines. Perpendicular is when two lines cross right into the middle and makes 4 right angles (90 degrees).
you!! :)
Tangent.
it depends on how you place it, they can be. all a line segment is is a straight line, if you have two you can have parallel or crossing lines.
An intersection
There are several types of straight lines based on their orientation and relationship to other lines. The main types include horizontal lines, which run parallel to the x-axis; vertical lines, which run parallel to the y-axis; and diagonal lines, which have a slope and can rise or fall. Additionally, lines can be classified as parallel (never intersecting), perpendicular (intersecting at right angles), or intersecting (crossing at any angle).
Perpendicular lines.
intersecting lines...
Two straight lines that are equidistance from each other.
In two dimensions the lines would be intersecting lines not perpendicular (I believe this is called transversal, see related link). If you are in three dimensions they would be skew lines, like to jets crossing above you that don't hit each other. One is higher than the other.
If the shape has three straight lines and no other lines then it has to be a triangle
Parallel lines are 2 long straight lines that don't touch each other
two lines crossing each other
they both have lines crossing each other which make angles. perpendicular lines make right angles while intersecting lines make other kinds