To Create a Construction Line
You can create construction lines and construction circles.
1. Click Sketch > Construction Line.
2. Create a line using one of the following:
◦ Horiz—Creates a horizontal construction line at a point.
◦ Vert—Creates a vertical construction line at a point.
◦ Crossed Pair—Creates two construction lines perpendicular to each other at a given angle through a point.
◦ Angle—Creates a line at the point picked at an angle measured from the X-axis in the counterclockwise direction.
◦ Offset—Creates a line offset at a specified distance from another line.