Merging a Point to a Path

A point can be merged to a path (straight object, circle, arc, interior, point locus, or function plot) using the Merge command. Select an independent point and a path that doesn’t depend on that point. The point must be independent, and the path must not be dependent on the point. In this way, for example, an endpoint of a segment can be joined or merged to another segment. After it’s merged, the point is attached to the segment and can move along the segment but cannot leave it (unless you Split it from that segment).

Merge Point To Segment