Autodesk AUTOCAD 2006, Справочник по командам, Страница: 89 / 1490

NOTE If you press ENTER without specifying a point, the endpoint of the last
drawn line or arc is used and you are immediately prompted to specify the endpoint
of the new arc. This creates an arc tangent to the last drawn line, arc, or polyline.
Specify second point of arc or [CEnter/End]:
Second Point
Draws an arc using three specified points on the arc’s circumference. The first
point is the start point (1). The third point is the endpoint (3). The second
point (2) is a point on the circumference of the arc.
Specify end point of arc: Specify a point (3)
1
2
3
You can specify a three-point arc either clockwise or counterclockwise.
Center
Specifies the center of the circle of which the arc is a part.
Specify center point of arc:
Specify end point of arc or [Angle/chord Length]:
End Point
Using the center point (2), draws an arc counterclockwise from the start
point (1) to an endpoint that falls on an imaginary ray drawn from the
center point through the third point (3).
1
2
3
The arc does not necessarily pass through this third point, as shown in the
illustration.
Angle
Draws an arc counterclockwise from the start point (1) using a center point
(2) with a specified included angle. If the angle is negative, a clockwise arc
is drawn.
Specify included angle: Specify an angle
Startup Suite Dialog Box | 65