Using the Get Point Menu
While sketching, you can use the following location filters available in the Get Point menu:
Pick Point—Picks a point anywhere on the screen.
Vertex—Locates a point at the endpoint as well as midpoint of an open curve (line, arc, or spline), the center of an arc or circle, or the intersection between two entities.
On Entity—Locates a point by picking anywhere along an entity or model edge.
Rel Coords—Locates a point relative to the last point selected by using X- and Y-coordinate values that you type. Rel Coords is available only after you specify the first pick point from which to measure.
Abs Coords—Locates a point by entering X- and Y-coordinates relative to the current coordinate system.
On Axis—Creates a point at the intersection of an axis and the sketching plane.