2009

3 Click the arrow beside the Constraint tool on the panel bar or on the 2D
Sketch panel toolbar to open the pop-up menu. Click the Collinear
constraint tool. Click the horizontal lines at the top of the sketch.
Your sketch should look like the following figure. Note the collinear lines
identified by the red arrows.
4 Press ESC to cancel the Collinear constraint tool. Drag the top-right
horizontal line down and note how the sketch changes. This technique
is known as constrained drag.
5 Click the down arrow beside the Constraint tool again, and then click
the Equal constraint tool. Click the horizontal line at the lower left of
the sketch and then click the horizontal line at the upper left.
Make the two horizontal lines on the right side equal to the line at the
lower left.
Your sketch should look like the following figure.
6 Press ESC to cancel the Constraint tool. Drag the right vertical line and
note how the sketch changes. With the equal constraint applied, the
sketch retains its symmetry as you drag the vertical lines.
Add Constraints to Existing Sketches | 35