"Center, Start, Angle" command generates an arc by specifying center, start point and angle of the arc.
While
"Specify Center of Arc"
prompt is displayed, specify the center of the arc to generate.
While
"Specify Start Point of Arc"
prompt is displayed, Specify the start poitn of the arc to generate.
While
"Specify End Point of Arc"
prompt is displayed, Specify the end poitn of the arc to generate.