Ray (Coordinate Geometry)
which starts at a
and goes off in a particular direction to infinity,
possibly through a second point.
Adjust the ray below by dragging an orange dot and see how the ray
AB behaves. You can also drag the origin point at (0,0).
A ray is a
that starts at a given
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
of the points involved. The naming conventions are also the same.
Things to try
- In the above diagram, press reset. The ray AB has an endpoint A at (53,7) and
passes through point B at (53,20) on its way to infinity.
- Drag A, B or the origin point and construct various other rays to get a feel for the concept.
See also the definition of a Ray in plane geometry.
Other Coordinate Geometry entries
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