1. Arc ,Rectangular Issued by: Ms.c. Ameer Mosa Thoeny lecture(7)
University of Technology
Computer engineering and information technology Department
AutoCAD
lecture(7)
Drawing Commands
Arc ,Rectangular
Issued by: Ms.c. Ameer Mosa Thoeny

2. University of Technology
Computer engineering and information technology Department
Command :Arc
An Arc is a part of circle; it is a regular curve of less than 360. An Arc is one object. Arcs are always drawn by default in a counter clockwise direction.

3. 1) 3 point: Specify three points through which the arc passes
University of Technology
Computer engineering and information technology Department
1) 3 point: Specify three points through which
the arc passes
The Arc command prompt is:
Command: arc
Specify start point of arc or [Center]: 10, 10
Specify second point of arc or [Center/End]: 20, 10
Specify end point of arc: 10, 20

4. Specify start point of arc or [Center]: 10,10
University of Technology
Computer engineering and information technology Department
2) Start, Center, End: The radius is defined by the first two points that you specify.
Command: arc
Specify start point of arc or [Center]: 10,10
Specify second point of arc or [Center/End]: c
Specify center point of arc: 20,20
Specify end point of arc or [Angle/chord Length]: 10,20

5. ARC Specify start point of arc or [Center]: 10,10
University of Technology
Computer engineering and information technology Department
3) Start ,Center, Angle:
Command: arc
ARC Specify start point of arc or [Center]: 10,10
Specify second point of arc or [Center/End]: c
Specify center point of arc: 20,20
Specify end point of arc or [Angle/chord Length]: a
Specify included angle: 260

6. Specify start point of arc or [Center]: 10,10
University of Technology
Computer engineering and information technology Department
4) Start, End, Direction:
Command: arc
Specify start point of arc or [Center]: 10,10
Specify second point of arc or [Center/End]: e
Specify end point of arc: 10,20
Specify center point of arc or [Angle/Direction/Radius]: d
Specify tangent direction for the start point of arc:pick 6

7. University of Technology
Computer engineering and information technology Department
Exercise: Create the Geometry shown in figure below. Start the first circle center at point 4,4.5 as shown. 7

8. University of Technology
Computer engineering and information technology Department
Rectangle:
The rectangle command only requires the specification of two diagonal corners for construction of a rectangle.
Command: Rectangle
Specify first corner point or[chamfer/ elevation/ fillect/thicknss/width] :x,y
Specify other corner point: x,y 8

9. A rectangle can have width:
University of Technology
Computer engineering and information technology Department
A rectangle can have width:
Specify first corner point or [chamfer/fillet/width]: W
Specify line width for a rectangle <0.0000>: 10
Specify first corner point or [Chamfer/Elevation/Fillet/Thickness/Width]: 10,10
Specify other corner point or [Dimensions]: 40,40 9

10. Specify fillet radius for rectangles <0.0000>: 10
University of Technology
Computer engineering and information technology Department
The fillet option allows you to specify values for the fillet radius at four rectangular corners:
Command: rec
Specify first corner point or [Chamfer/Elevation/Fillet/Thickness/Width]: F
Specify fillet radius for rectangles <0.0000>: 10
Specify first corner point or [Chamfer/Elevation/Fillet/Thickness/Width]:10,10
Specify other corner point or [Dimensions]: 40,40 10

11. University of Technology
Computer engineering and information technology Department
Chamfer option allows you to specify values for the chamfer distances at four rectangular corners:
Command: Rec
Specify first corner point or [Chamfer/Elevation/Fillet/Thickness/Width]: ch
Specify first chamfer distance for rectangles <0.0000>: 2
Specify second chamfer distance for rectangles <2.0000>: 2
Specify first corner point or [Chamfer/Elevation/Fillet/Thickness/Width]: 10,10
Specify other corner point or [Dimensions]: 40,40 11 11

12. Draw the shape below using rectangle, circle commands.
University of Technology
Computer engineering and information technology Department
Exercise:
Draw the shape below using rectangle, circle commands.