starts at a point and continues in one direction for infinitely long distance
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A ray is a dot at one end of the line and a arrow at the other end.
A ray in math begins as a point (or dot, in laymans terms) with a straight arrow coming from it.
A ray line has an endpoint with the point on the left side, connected to a line with a arrow pointing towards the right side.
An obtuse angle is between 90o and 180o.90o is a right angle.Between 90o and 180o is an obtuse angle.180o is a straight angle.A right angle is like this (look at ray A):A^|||L-----------> exactly 90oA straight angle is this (look again at ray A):A 180o is flatFor an obtuse angle, the A should be somewhere between the places where A was in the right and the straight angles.
Indeed it does, my good man. See, if just one end has an arrow, then it is a ray, and if neither end has an arrow, it is a line segment.