No and yes.
No, because parallel rays (if they don't share a common vertex) will never intersect and will never form any angles.
Yes, because if they do have a common vertex, they would form a straight angle of 180°.
No, they(the lines) cannot touch each other?
Nope. Parallel rays never meet- and so cannot form an angle.
Will Any two rays form an angle?
Two intersecting rays form an angle. Without two rays you do not have an angle.
For two parallel line segments or rays to form an angle, they would either need to coincide with each other, forming a 0° or 360° angle, or they would need to be extending in opposite directions from their shared point, forming a 180° angle.
The common endpoint of 2 rays that form an angle is the vertex.
NO
Nope. Parallel rays never meet- and so cannot form an angle.
False. They might be parallel, for example
Will Any two rays form an angle?
Two intersecting rays form an angle. Without two rays you do not have an angle.
Two rays that share an endpoint form an angle.
For two parallel line segments or rays to form an angle, they would either need to coincide with each other, forming a 0° or 360° angle, or they would need to be extending in opposite directions from their shared point, forming a 180° angle.
the vertex is the point where two rays begin and form and angle
The common endpoint of 2 rays that form an angle is the vertex.
Opposite Rays
They meet at a vertex to form an angle
They meet at a vertex to form an angle