Creation of geometries by Coordinate system methods using AutoCad
AIM:- To create the geometric from p1 to p2 using all the coordinates system methods.
- ABSOLUTE COORDINATE SYSTEM.
- RELATIVE COORDINATE SYSTEM.
- POLAR COORDINATE SYSTEM.
INTRODUCTION:- Using the absolute coordinate system and relative coordinate system, polar coordinate system.
Click the AutoCad icon from desktop and go to the start>ALL PROGRAM>Autodesk>AutoCad.
Click New icon to open a new drawing.
Set the limits and units.
Using commands line command and circle command and circle command.
PROCEDURE:-
- P1:

First solve this drawing using absolute coordinate systems;
Enter the line command,
- Then specify the first point: type 2,1 at command prompt and press enter (as a starting point)
- Specify next point: 8,1 then enter
- Specify next point: 8,2 then enter
- Specify next point: 5,2 then enter
- Specify next point: 3,6 then enter
- Specify next point: 8,6 then enter
- Specify next point: 8,7 then enter
- Specify next point: 8,2 then enter
- Specify next point or close: select the close option press enter.
THEN RELATIVE COORDINATE METHOD:
Enter the line command,
- Then specify the first point: type 2,1 at command prompt and press enter (as a starting point)
- Specify next point: @8,0 press enter
- Specify next point: @0,2 press enter
- Specify next point: @-5,0 press enter
- Specify next point: @0,6 press enter
- Specify next point: @8,0 press enter
- Specify next point: @0,7 press enter
- Specify next point: @0,-2 press enter
- Specify next point or close: select the close option press enter.
Then drawing in POLAR COORDINATE METHOD:
- Specify first point: 2,1 then enter
- Specify next point: @6<0 then enter
- Specify next point: @1<90 then enter
- Specify next point: @-5<180 then enter
- Specify next point: @ U then enter
- Specify next point: @5<180 then enter
- Specify next point: @5<90 then enter
- Specify next point: @1<90 then enter
- Specify next point: @6<180 then enter
- Specify next point or close: C then enter
- P2:

Using absolute coordinate systems;
Enter the line command,
- Then specify the first point: type 2,1 at command prompt and press enter (as a starting point)
- Specify next point: 5,1 then enter
- Specify next point: 5,5 then enter
- Specify next point: 6,5 then enter
- Specify next point: 6,-5 then enter
- Specify next point: 6,9 then enter
- Specify next point: 9,7 then enter
- Specify next point: 7,-4 then enter
- Specify next point or close: select the close option press enter.
Using relative coordinate system:
- Specify next point: @ 0,5 enter
- Specify next point: @ 1,0 enter
- Specify next point: @ 0,-5 enter
- Specify next point: @ 3,0 enter
- Specify next point: @ 0,8 enter
- Specify next point: @ U enter
- Specify next point: @ U enter
- Specify next point: @ 3,0 enter
- Specify next point: @ 0,8 enter
- Specify next point: @ U enter
- Specify next point: @ 0,7 enter
- Specify next point: @ U enter
Using polar coordinate system:
Enter the line command,
- Then specify the first point: 2,1 at command prompt and press enter (as a starting point)
- Specify next point: @7<45 then enter
- Specify next point: @3<0 then enter
- Specify next point: @7<225 then enter
- Specify next point: @3<180 then enter
- Specify next point: @4<90 then enter
- Specify next point: @1<180 then enter
- Specify next point: @4<270 then enter
- Specify next point or close: select the close option press enter.
3. P4:
Using absolute coordinate systems;
Enter the line command,
- Then specify the first point: type 2,1 at command prompt and press enter (as a starting point)
- Specify next point: 2,8 then enter
- Specify next point: 3,8 then enter
- Specify next point: 5,-8 then enter
- Specify next point: 7,8 then enter
- Specify next point: 8,8 then enter
- Specify next point: 8,-8 then enter
- Specify next point: 7,1 then enter
- Specify next point: 7,5 then enter
- Specify next point: 5,3 then enter
- Specify next point: 5,5 then enter
- Specify next point: 3,-5 then enter
- Specify next point or close: select the close option press enter.
THEN RELATIVE COORDINATE METHOD:
Enter the line command,
- Then specify the first point: type 2,1 at command prompt and press enter (as a starting point)
- Specify next point: @1,0 press enter
- Specify next point: @0,4 press enter
- Specify next point: @2,0 press enter
- Specify next point: @0,2 press enter
- Specify next point: @0,-2 press enter
- Specify next point: @1,0 press enter
- Specify next point: @0,7 press enter
- Specify next point: @1,0 press enter
- Specify next point: @0,-2 press enter
- Specify next point: @0,3 press enter
- Specify next point: @0,7 press enter
- Specify next point or close: select the close option press enter.
Using polar coordinate system:
Enter the line command,
- Then specify the first point: 2,1 at command prompt and press enter (as a starting point)
- Specify next point: @7<90 then enter
- Specify next point: @1<0 then enter
- Specify next point: @3<45 then enter
- Specify next point: @U then enter
- Specify next point: @-3<45 then enter
- Specify next point: @U then enter
- Specify next point: @3<135 then enter
- Specify next point: @U then enter
- Specify next point: @-3<135 then enter
- Specify next point: @3<45 then enter
- Specify next point: @1<0 then enter
- Specify next point: @7<270 then enter
- Specify next point: @1<180 then enter
- Specify next point: @4<90 then enter
- Specify next point: @2<225 then enter
- Specify next point: @U then enter
- Specify next point: @3<225then enter
- Specify next point: @3<135 then enter
- Specify next point: @4<270 then enter
- Specify next point or close: C then enter
- P5:

Using absolute coordinate systems;
Enter the line command,
- Then specify the first point: type 2,1 at command prompt and press enter (as a starting point)
- Specify next point: 2,9 then enter
- Specify next point: 9,9 then enter
- Specify next point: 5,-1 then enter
- Specify next point: 5,2 then enter
- Specify next point: 8,2 then enter
- Specify next point: 8,8 then enter
- Specify next point: -3,8 then enter
- Specify next point or close: select the close option press enter.
THEN RELATIVE COORDINATE METHOD:
Enter the line command,
- Then specify the first point: type 2,1 at command prompt and press enter (as a starting point)
- Specify next point: @1,0 press enter
- Specify next point: @0,4 press enter
- Specify next point: @2,0 press enter
- Specify next point: @0,2 press enter
- Specify next point: @0,-2 press enter
- Specify next point: @1,0 press enter
- Specify next point: @0,7 press enter
- Specify next point: @1,0 press enter
- Specify next point: @0,-2 press enter
- Specify next point: @0,3 press enter
- Specify next point: @0,7 press enter
- Specify next point or close: select the close option press enter.
Using polar coordinate system:
Enter the line command,
- Then specify the first point: 2,1 at command prompt and press enter (as a starting point)
- Specify next point: @8<90 then enter
- Specify next point: @7<0 then enter
- Specify next point: @8<270 then enter
- Specify next point: @4<180 then enter
- Specify next point: @1<90 then enter
- Specify next point: @3<0 then enter
- Specify next point: @6<90 then enter
- Specify next point: @5<180 then enter
- Specify next point: @7<270 then enter
- Specify next point or close: select close option press enter.
- P7:

Using absolute coordinate systems;
Enter the line command,
- Then specify the first point: type 2,1 at command prompt and press enter (as a starting point)
- Specify next point: 2,6 then enter
- Specify next point: 2,10 then enter
- Specify next point: 10,10 then enter
- Specify next point: 10,2 then enter again enter line specify first point 3,2 then enter
- Specify next point: 3,3 then enter
- Specify next point: 3,5 then enter
- Specify next point: 5,5 then enter
- Specify next point or close: select the close option enter.
- Again enter line command specify first point: 6,2 then enter
- Specify next point: 6,3 then enter
- Specify next point: 6,8 then enter
- Specify next point: 8,1 then enter
- Specify next point or close: select the close or undo option then enter.
THEN RELATIVE COORDINATE METHOD:
Enter the line command,
- Then specify the first point: type 2,1 at command prompt and press enter (as a starting point)
- Specify next point: @1,0 press enter
- Specify next point: @0,4 press enter
- Specify next point: @8,0 press enter
- Specify next point: @0,10 press enter
- Specify next point: @-8,0 press enter
- Specify next point: @3,1 press enter
- Specify next point: @0,3 press enter
- Specify next point: @2,0 press enter
- Specify next point: @0,2 press enter
- Specify next point: @6,1 press enter
- Specify next point: @0,3 press enter
- Specify next point: @2,0 press enter
- Specify next point: @0,2 press enter
- Specify next point or close: select the close option then enter.
Using polar coordinate system:
Enter the line command,
- Specify first point: 2,1 enter
- Specify next point: @6<90 enter
- Specify next point: @8<0 enter
- Specify next point: @6<270 enter
- Specify next point: @C enter
- Command LINE L enter
- Specify first point: 3,2 enter
- Specify next point: @3<90 enter
- Specify next point: @2<0 enter
- Specify next point: @2<270 enter
- Specify next point: @U enter
- Specify next point: @3<270 enter
- Specify next point: @C enter
- Command LINE L enter
- Specify first point: 6,2 enter
- Specify next point: @3<90 enter
- Specify next point: @2<0 enter
- Specify next point: @3<270 enter
- Specify next point: C enter
- P8:

Using absolute coordinate systems;
Enter the line command,
- Then specify the first point: type 0,0 at command prompt and press enter (as a starting point)
- Specify next point: 10,0 then enter
- Specify next point: 10,2 then enter
- Specify next point: 2,6 then enter
- Specify next point: 6,6 then enter
- Specify next point: 6,10 then enter
- Specify next point: 10,8 then enter
- Specify next point: 8,1 then enter
- Specify next point: 4,4 then enter
- Specify next point: 4,1 then enter
- Specify next point or close: select the close or undo option then enter.
THEN RELATIVE COORDINATE METHOD:
Enter the line command,
- Then specify the first point: type 0,0 at command prompt and press enter (as a starting point)
- Specify next point: @10,0 press enter
- Specify next point: @0,2 press enter
- Specify next point: @-4,0 press enter
- Specify next point: @0,4 press enter
- Specify next point: @3,0 press enter
- Specify next point: @0,2 press enter
- Specify next point: @-8,0 press enter
- Specify next point: @0,-2 press enter
- Specify next point: @3,0 press enter
- Specify next point: @0,-4 press enter
- Specify next point: @0,-4 press enter
- Specify next point: @4,0 press enter
- Specify next point or close: select the close option then enter.
Using polar coordinate system:
Enter the line command:
- Specify first point: 0,0 enter
- Specify next point: 2<90 enter
- Specify next point: 4<0 enter
- Specify next point: 4<90 enter
- Specify next point: 3<180 enter
- Specify next point: 2<90 enter
- Specify next point: 8<0 enter
- Specify next point: 2<270 enter
- Specify next point: 4<180 enter
- Specify next point: U enter
- Specify next point: 3<180 enter
- Specify next point: 4<270 enter
- Specify next point: 4<0 enter
- Specify next point: 2<270 enter
- Specify next point: C enter
- P9:
Using absolute
coordinate systems;
Enter the line command,
- Then specify the first point: type 1,1 at command prompt and press enter (as a starting point)
- Specify next point: 6,1 then enter
- Specify next point: 6,3 then enter
- Specify next point: 3,6 then enter
- Specify next point: 3,2 then enter
- Specify next point: 2,4 then enter
- Specify next point: 5,4 then enter
- Specify next point: 5,6 then enter
- Specify next point: 6,8 then enter
- Specify next point: 8,1 then enter
- Specify next point or close: select the close or undo option then enter.
THEN RELATIVE COORDINATE METHOD:
Enter the line command,
- Then specify the first point: type 1,1 at command prompt and press enter (as a starting point)
- Specify next point: @6,0 press enter
- Specify next point: @0,2 press enter
- Specify next point: @-3,0 press enter
- Specify next point: @0,1 press enter
- Specify next point: @-1,0 press enter
- Specify next point: @0,2 press enter
- Specify next point: @3,0 press enter
- Specify next point: @0,2 press enter
- Specify next point: @4,0 press enter
- Specify next point or close: select the close option then enter.
Using polar coordinate system:
Enter the line command:
- Specify first point: 1,1 enter
- Specify next point: @5<0 enter
- Specify next point: @2<90 enter
- Specify next point: @3<180 enter
- Specify next point: @1<270 enter
- Specify next point: @1<180 enter
- Specify next point: @2<90 enter
- Specify next point: @3<0 enter
- Specify next point: @2<90 enter
- Specify next point: @4<165 enter
- Specify next point: @ C enter
- P10:

Using absolute coordinate systems;
Enter the line command,
- Then specify the first point: type 1,1 at command prompt and press enter (as a starting point)
- Specify next point: 1,8 then enter
- Specify next point: 6,8 then enter
- Specify next point: 6,4 then enter
- Specify next point: 3,4 then enter
- Specify next point: 3,4 then enter
- Specify next point: close option then enter again line command specify the first point: 2,5 then enter
- Specify next point: 2,7 then enter
- Specify next point: 5,7 then enter
- Specify next point: 5,5 then enter
- Specify next point or close: select the close or undo option then enter.
THEN RELATIVE COORDINATE METHOD:
Enter the line command,
- Then specify the first point: type 1,1 at command prompt and press enter (as a starting point)
- Specify next point: @2,0 press enter
- Specify next point: @0,3 press enter
- Specify next point: @3,0 press enter
- Specify next point: @0,4 press enter
- Specify next point: @-5,0 press enter
- Specify next point: at close the current point and start the line command specify first point again and enter
- Specify next point: @0,2 press enter
- Specify next point: @3,0 press enter
- Specify next point: @0,-2 press enter
- Specify next point or close: select the close option then enter.
USING POLAR COORDINATE SYSTEM:
Enter line command:
- Specify first point: 1,1 enter
- Specify next point: @2<0 enter
- Specify next point: @3<90 enter
- Specify next point: @3<0 enter
- Specify next point: @4<90 enter
- Specify next point: @5<180 enter
- Specify next point: C enter
- Command LINE L enter
- Specify first point: 2,5 enter
- Specify next point: @2<90 enter
- Specify next point: @3<0 enter
- Specify next point: @2<270 enter
- Specify next point: C enter
DRAWING THE PROFILE AND THE TRUSSES USING POLAR COORDINATE SYSTEM:
- PROFILE – WOOD:

Using polar coordinate system:
Enter line command:
- Specify first point: 0,0 enter
- Specify next point: @1<90 enter
- Specify next point: @2<0 enter
- Specify next point: @5<90 enter
- Specify next point: @2<180 enter
- Specify next point: @5.291<30.535 enter
- Specify next point: @5.291<285.53 enter
- Specify next point: @ U enter
- Specify next point: @5.291<30.545 enter
- Specify next point: @5.291<335.535 enter
- Specify next point: @1<270 enter
- Specify next point: @2<180 enter
- Specify next point: @4<270 enter
- Specify next point: @0.498<270 enter
- Specify next point: @2<0 enter
- QUEEN POST TRUSS:

Using polar coordinate system:
Enter line command:
- Specify first point: 1,1 enter
- Specify next point: @4<90 enter
- Specify next point: @1<0 enter
- Specify next point: @2.566<0 enter
- Specify next point: @2.566<0 enter
- Specify next point: @1<0 enter
- Specify next point: @4<270 enter
- Command LINE L enter
- Specify first point: 4.5,5 enter
- Specify next point: @3.556<90 enter
- Specify next point: @5<225 enter
- Specify next point: C enter
- Command LINE L enter
- Specify first point: 2,5 enter
- Specify next point: @1<90 enter
- Specify next point: @3.556<90 enter
- Specify next point: @5<225 enter
- Specify next point: C enter
- Command LINE L enter
- Specify first point: 2,5 enter
- Specify next point: @1<90 enter
- Specify next point: @2.566<338 enter
- Specify next point: C enter
- Command LINE L enter
- Specify first point: 4.5,8.5 enter
- Specify next point: @5<316 enter
- Specify next point: C enter
- Command LINE L enter
- Specify first point: 7,5 enter
- Specify next point: @1<90 enter
- Specify next point: @2.566<200 enter
- Specify next point: C enter
- MONO PITCH:

Using polar coordinate system:
Enter command line:
- Specify first point: 7,2 enter
- Specify next point: @0,2 enter
- Specify next point: @0,1.33 enter
- Specify next point: U enter
- Specify next point: @0,2 enter
- Specify next point: @2.1083<203 enter
- Specify next point: @1.33<270 enter
- Specify next point: @2<0 enter
- Specify next point: @2.40<146 enter
- Specify next point: @2.0932<203 enter
- Specify next point: @0.667<270 enter
- Specify next point: @2<0 enter
- Specify next point: @2.108<161 enter
- Specify next point: @2.1230<204 enter
- Specify next point: @2<0 enter
- Specify next point: C enter
RESULT:- Completed the trusses and from P1 to P10 figures with the uses of all geometric coordinates systems.