1. Click on the menu bar, "Drawing> elliptical arc.
2. Click the Drawing toolbar "painted elliptical arc command" button 
.
3. Enter DrawEllipseArc the command line, and press Enter.
After the execution command, the command line displays the following information:
Command: _DrawEllipseArc
Specifies shaft ellipse point:
Specifies the other end of the shaft:
Specifies the length of the other axle:
Specify the starting angle:
Specifies the end angle:
Need some options or keywords.
Specifies the end angle:
Drawing an elliptical arc:
The center (C) / <axes of the ellipse first endpoint>: designates the first points of an elliptic axis to define the first end of the first axis of the elliptical arc defined by first and second endpoints of the elliptical arc. The angle of the first axis determines the angle of the elliptical arc. The first shaft may be either a minor axis of an elliptical arc to the major axis of an elliptical arc.
A second axial end: Specifies Point 2
Rotation (R) / <Other axis>: Specify a point 3, or input R
"Rotation" and "other axes" below "center point" in the "rotation" and the same as "other axes" next operation.
Center: By specifying the center point of the ellipse elliptical arc where to create an elliptical arc.
The midpoint of the ellipse: Specify a point 1
End of the axis: the specified point 2
Rotation (R) / <Other axis>: Specify a point 3, or input R
Other axis: radius of the second shaft to the first axis to the midpoint of the distance from a specified point of the elliptic arc.
Parameters (P) / <start angle of the arc>: Specify a point 1 to determine the angle, or an angle input, the input P or the next operation can be reference to the following "rotation" option on the "parameters" and "arc starting introduction angle "is.