Contents Part II: Mesh Tutorials | Chapter 1: Introduction to the 2Dmesh Sketchboard | Print page 1.10. Trim Vertical LinesClick the Trim/Extend icon.Click near the top end of the rightmost vertical line.Click the horizontal line.Click Apply.Repeat this procedure to trim the excess off the other vertical line. « 1.9. Create Arc for Center Area Top 1.11. Create First Edge for Left Area »