Arc

Create a circle arc on the current layer.

Select creation method at the command prompt:

Center Start End        : Create a circle arc by center point , start point and end point

Start End On                : Create a circle arc by start point, end point  and a point on the arc

Start On End                : Create a circle arc by start point, point on the arc and end point

Start End  Direction        : Create a circle arc by start point, end point and initial tangent vector