Answer:
The ARC command, followed by three mouse clicks on a drawing, draws an arc of defined width. The first point defines a point on a circle, the second its diameter. Entering the second coordinate reduces the circle to a semi-circle, while the right button alters the direction from first to second point.
The circle command is used to draw a circle by specifying the center point and radius. Specify the center point of a circle on the workspace or viewport. Specify the radius of the circle. Or. To specify diameter, type D - press Enter - specify the diameter of the circle.
