CAB
Dihedral angle
That is called an angle.
Right angle E. The vertex of any angle can also be used to name the angle.
HPE is an angle congruent to angle HRN.
TBP an angle congruent to angle PTB.
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.
intersection
There is no specific name in general. If the line segments are straight, then it is a triangle.
Dihedral angle
DBV
5B
The pubic arch.
Such is called an exterior angle. A useful theorem is that an exterior angle is equal to the sum of its non adjacent interior angles.
That is called an angle.
Right angles aren't formed by other angles - it is already an angle itself. However, if you bisect a right angle, it becomes two acute angles.
It is not an intersection, but the Greenwich observatory in London England.
confluence