# HOW TO DRAW LINE IN AUTO CAD

upendra kumar

## HOW TO DRAW LINE IN AUTO CAD

The lines have an important role in any of drawing .There are many types
of methods available for drawing lines in an auto cad. Generally three types of
methods are used for drawing in an auto cad.

ABSOLUTE COORDINATES METHOD
RELATIVE COORDINATE METHOD
POLAR METHOD

A. ABSOLUTE COORDINATES METHOD :- In absolute coordinates method.
The  coordinates are drawn  with the reference of origin.Or the value of
coordinate at the origin point should be zero. Here ABCD is a point and its
absolute coordinates are given below.

Important setting in auto cad before line draw
Open the auto cad drawing sheet.

•  In Command write Drafting Setting> enter ,

Open a drafting setting dialog box , left click dynamic input in pointer input.
Left click on setting changed the mark Cartesian format and absolute
coordinate by pointer then OK.

Type the command UCS icon, Select origin.Check the origin coordinate.

In command type line , prompt LINE specify first point type 10,10 then enter

Line specify next point, write coordinate of B point (10,50) then enter.

Line specify next point, write coordinate of C point (50,50) then enter.

Line specify next point, write coordinate of D point (50,10) then enter.

Line specify next point, write coordinate of A point (10,10) then enter.

OR write C enter

B. RELATIVE COORDINATE METHOD :-In this method the coordinates of
forward point are calculated reference to the previous point.

Process :-  command line prompt LINE specify first point , type 10,10 then
enter

Line specify next point, write relative coordinate of B point @ 0,40 then enter.
Line specify next point, write relative coordinate of C point @ 40,0 then enter.

Line specify next point, write relative coordinate of D point @ 0,-40 then enter.

Line specify next point, write relative coordinate of A point @ -40,0 then enter.

C. POLAR METHOD:- In the polar  method the lines are drawn using angles
and distance.

Open a drafting setting dialog box ,left click dynamic input in pointer input.
Left click on setting changed the mark POLAR format and RELATIVE
coordinate by pointer then OK.

In the auto cad measure of angle from east , then the angle of east is 0d or 360d and measured in anticlockwise direction.

 LINE DISTANCE ANGLE AB 30 90d BC 30 0d CD 30 270d DA 30 180d

In auto cad type command in line
Line specify first point , left click on A
Line specify next point for line AB write : 30<90d then enter
Line specify next point for line BC write : 30<0d then enter
Line specify next point for line CD write : 30<270d then enter
Line specify next point for line DA write : 30<180d then enter
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