The rays VW and VZ don't necessarily have to go in opposite
directions even though they have the same endpoint. Even though they are
opposite arrays only if the angle is 180 degrees, they could still go in right
angle directions or any angle of directions. Fi the points V, W, and Z and
collinear and W and Z are on the side of point V, then they could also in fact
be the same ray as well. Travelling is opposite directions yet starting at the
same point is one of the characteristics of opposite rays. The first
point in the name must be the endpoint and rays are always named with two
points.
