Elliptical Arc
Use the ELLIPSE command to create an elliptical arc.
With the ELLIPSE command, you can draw a complete ellipse (see ELLIPSE) or an elliptical arc.
To draw an elliptical arc, you define the ellipse, then specify the section to be the arc. Type ELLIPSE on the command line. At the prompt, type Arc. Then you have the following choices.
Rotation defines the major to minor axis ratio by rotating a circle about the first axis. The higher the value (0 to 89.4 degrees), the greater the ratio of minor to major axis. A ratio of 0 defines a circle.
Start angle: specifying a point determines the start angle of the elliptical arc. Specifying a point for the End angle completes the elliptical arc.
Parameter requires the same input as Start angle. The difference is that Parameter creates the elliptical arc using the following equation:
p(u) = c + a* cos(u) + b* sin(u)
where c is the center of the ellipse and a and b are its major and minor axes, respectively.
The Parameter option toggles from Angle to Parameter mode and the Angle option toggles from Parameter to Angle mode. The mode you are in determines how the SolidWorks software calculates the ellipse.
Included defines an included angle beginning at the start angle. Enter a point or an angle.