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220 Graphs Application
To move a ray, drag its identifying point. To rotate it, drag any point except
the identifying point or end. To extend its visible portion, drag from the end.
Creating a Tangent
You can create a tangent line at a specific point on a geometric object or
function graph.
1. From the PointsandLines menu, select Tangent. (In the Graphs
application, click Geometry > PointsandLines > Tangent.)
2. Click the object to select it.
3. Click a location on the object to create the tangent.
4. To move a tangent, drag it. It remains attached to the object or graph.
Creating a Vector
1. From the PointsandLines menu, select Vector. (In the Graphs application,
click Geometry > PointsandLines > Vector.)