Nearest snap
Use the Nearest snap to snap to the nearest point of another entity. You can snap to the nearest point on an arc, circle, ellipse, elliptical arc, line, point, polyline segment, ray, spline, infinite line, or hatch pattern that is visually closest to the cursor.
Do one of the following to choose Nearest ():
On the ribbon, choose Draw > Nearest (in Entity Snaps).
On the menu, choose Tools > Entity Snaps > Nearest.
On the Entity Snaps toolbar, click the Nearest tool.
Type nearest and then press Enter.