Attach and Detach Points
To attach two points together, Click and drag one point on top of another point.
A blue ring will appear, Release the mouse button.
The two points will now be attached.
To detach the points, right-click on the point and select Detach.
To attach a point to a line, circle, or arc, click and drag the point over the line, circle, or arc. When a blue ring appears around the point, release the mouse button.
To detach the point, right-click on the point and select Detach.
Shapes have "anchor points" where points can be attached. These appear when a shape is selected.
To attach a point to a shape, click and drag the point over the shape anchor point. When a blue ring appears around the point, release the mouse button.
To detach the point, right-click on the point and select Detach.