Autodesk 00308-011408-9F30A User Guide - Page 120

Entering a Point to Create a Tangent AutoPoint indicator Tangent snap makes it easy to enter a point that creates a line tangent to an existing arc or circle. As you move the pointer over the drawing, the AutoPoint Indicator identifies the nearest point tangent to the original point. To enter a point that creates a line tangent to an arc or circle 1 While in a drawing mode, activate Tangent snap on the Snaps toolbar. 2 Click the entity. Because there are two tangent points, you must click near the tangent point you want to use. Entering a Quadrant Point on an Arc or Circle AutoPoint indicator Quadrant snap allows you to enter a point that coincides with a quadrant snap point on an arc or circle. As you move the pointer over the entity, the AutoPoint Indicator identifies the nearest quadrant point. Normally, there are four such points, however, you can specify up to 72 evenly spaced snap points. 110 | Chapter 9 Entering & Modifying Points