AutoCAD is a CAD software developed by Autodesk in 1982, originally used in DOS and now available on Windows, serving various fields such as mechanical, civil, and electrical design. The document explains different types of coordinates used in AutoCAD, including absolute, relative, and polar coordinates, and how to utilize them. It emphasizes the importance of understanding these coordinate systems for effective use of the software.

1. AUTO CAD
2012
09/12/14 1

2. INTRODUCTION
•Auto cad is a Cad software of Autodesk.
•It is invented in 1982 in US.
•Auto cad LT and Auto cad Mastering.
•Previously used in DOS, now a day used in
windows.
•Used in every field Mechanical, Civil, Arch,
Electrical, Interior Design, Automobile etc..
09/12/14 2

3. Auto Cad Interface
09/12/14 3

4. Types of Co-ordinates
1. Absolute Co-ordinate.
2.Relative Co-ordinates.
3.Polar Co-ordinates.
AND
DDE (Direct Distance Entry ) Method
09/12/14 4

5. Absolute Co-ordinate
• Absolute coordinates are based on the UCS origin (0,0)
09/12/14 5

6. Absolute Co-ordinate
• Absolute coordinates are based on the UCS origin (0,0)
09/12/14 6

7. Absolute Co-ordinate
(X,Y)
(0,0)
(X,Y)
(30,20)
(X,Y)
(30,0)
(X,Y)
(0,20)
09/12/14 7
4 3
30
20
Y
1 2 X

8. Relative Co-ordinates
• Relative coordinates are based on the
last point entered.
• When you know the location of a point
in relation to the previous point.
• Use @ sign. For example, entering
@3,4
09/12/14 8

9. Relative Co-ordinate
Y X
X
(@-30,0) (@0,20)
(Click Any where) (@30,0)
09/12/14 9
4 3
30
20
Y
X
Y
X
Y
(@0,-20)
1 2

10. Polar Co-ordinates
09/12/14 10
• Polar coordinates use
a distance and an
angle to locate a point.
• Use @ dis < angle. For
example, @50<45

11. Polar Co-ordinate
90
180 0
90
180 0
(@30<180) (@20<90)
270
90
0
(@30<0)
270
(@20<270)
09/12/14 11
4 3
1 2
30
20
90
0
Click any where
START YOUR 1ST CLASS-ALL THE BEST.

12. 09/12/14 12