Perp/Tan snap is only snapping to keypoints.Can only snap perpendicular or tangent to end-point and mid-point ofelement.Cannot place line tangent to two arcs.Cannot glide the tangent or perpendicular of a line along the element snapped to.
Disable AccuSnap setting "Fixed Point for Perp./Tan. From".Steps:1. From Menu bar, go to Settings > Snaps > AccuSnaps (AccuSnap Settingsdialog opens).2. Switch to "General" Tab.3. Disable "Fixed Point for Perp./Tan. From"