Sketching Tangent Lines You can easily sketch lines tangent to two entities using the 2-Tangent Line option.

Task 2-17. Begin an oval sketch on the previous datum plane.

1. With the datum plane still selected, start the Sketch Tool from the feature toolbar.
2. Notice that in the Sketch dialog box datum plane RIGHT is automatically selected as the Reference plane, facing the Right.
3. Click Sketch and then click Close from the References dialog box.
4. Click Datum Planes from the main toolbar to disable their display.
5. Click No Hidden from the main toolbar.
6. Sketch as shown in the following figure

• Right-click and select Centerline, and sketch a vertical centerline.
• Right-click and select Circle and sketch two circles with equal radii as shown.
• Click Constraints from the sketcher toolbar.
• Click Symmetric , and select the center of each circle and then the centerline.
• Click Close from the Constraints dialog box
• Click 2-Tangent Line from the line types flyout in the sketcher toolbar.
• Allowing the cursor to snap to the circles, sketch two lines as shown.

Creating a Sketch