Contents Part II: Mesh Tutorials | Chapter 1: Introduction to the 2Dmesh Sketchboard | Print page 1.5. Create an ArcClick the Arc icon.Activate Radius, enter Radius = 5, activate Angle, enter Angle = 179.9.Click the center point created in previous step.Click the bottom end of the rightmost vertical line. « 1.4. Create Node 1.6. Complete the Region Boundary »