All lines are drawn with a default layer 0. For ease of drawing, grid and snap on grid are enabled.
Creates an arc by pointing center, radius and start/end angles. In option menu we can swap start/end angles ( clockwise/counterclockwise ). All parameters can be entered in the command line.
Creates an arc by pointing three consecutive points. Points can be entered in the command line.
Creates a concentric arc to the indicated arc. We can choose distance ( difference of radiuses ) in command line. Before approving the selection we can see the two possible arcs (internal / external) by moving the mouse around the arc.
Creates an arc tangential to the indicated object. We can choose radius or angle arc. Before approving the selection we can see the possible arcs by moving the mouse around the selected object.