Question

what do you mean by ray
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Answer 1

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A portion of a line which starts at a point and goes off in a particular direction to infinity.

Answer 2

Explanation:

A line which starts at a point with given coordinates, and goes off in a particular direction to infinity, possibly through a second point.

A line which starts at a point with given coordinates, and goes off in a particular direction to infinity, possibly through a second point.A ray is a line that starts at a given point and goes off for ever in some direction. It may pass through another point as it does so. This is the same as the definition of a Ray in ordinary plane geometry, the only difference being that we know the coordinates of the points involved. The naming conventions are also the same.