yes, a ray does have infinite length.
true
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Line and Ray APEX
Due to a ray extending infinitely in one direction, the length of a ray is always infinite. It's not possible for a ray to have any other length. If it did have a fixed length, it would be a line segment, not a ray.
A line does have infinite length because it exists on an infinite plane. The only time it does not have infinite length is when it is a line segment.
a ray and a line
A line is one dimensional and can have infinite length.