Autocad training
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AUTO CAD 2012
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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..
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Auto Cad Interface
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Types of Co-ordinates1.Absolute Co-ordinate.
2.Relative Co-ordinates.
3.Polar Co-ordinates.
AND
DDE (Direct Distance Entry ) Method
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Absolute Co-ordinate• Absolute coordinates are based on the UCS origin (0,0)
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Absolute Co-ordinate• Absolute coordinates are based on the UCS origin (0,0)
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Absolute Co-ordinate
(X,Y)
(0,0)
(X,Y)
(30,0)
(X,Y)
(30,20)
(X,Y)
(0,20)
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30
20Y
X1 2
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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
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Relative Co-ordinate
(Click Any where)(@30,0)
(@0,20)(@-30,0)
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30
20Y
X
Y
XY
XY
X
(@0,-20)
1 2
34
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Polar Co-ordinates
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• Polar coordinates use a distance and an angle to locate a point.
• Use @ dis < angle. For example, @50<45
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Polar Co-ordinate
(@30<0)
(@20<270)
(@20<90)(@30<180)
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30
20
START YOUR 1ST CLASS-ALL THE BEST.
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34
90
0
Click any where
90
0
90
0180
270
90
0180
270
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