it if called a edge for a 3D shape
Valley
An angle is formed where two lines meet. Parallel lines do not meet. Therefore they do not form an angle. So there is no angle to have a name. So no name.
Angle is a space between two lines or surfaces that meet at one point, which you measure in degrees.
An intersection is formed when two lines meet.
Parallel Lines will never meet
... are straight lines where two planar surfaces meet.
Intersection or Intersecting Lines
Valley
An angle is formed where two lines meet. Parallel lines do not meet. Therefore they do not form an angle. So there is no angle to have a name. So no name.
Angle is a space between two lines or surfaces that meet at one point, which you measure in degrees.
all
Junction.
An intersection is formed when two lines meet.
An angle is formed when two lines meet (or cross). The vertex is the point where the lines meet.An angle is formed when two lines meet (or cross). The vertex is the point where the lines meet.An angle is formed when two lines meet (or cross). The vertex is the point where the lines meet.An angle is formed when two lines meet (or cross). The vertex is the point where the lines meet.
parallel
interface
Parallel Lines will never meet