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  1. Home/
  2. KRISHNADAS K DAS/
  3. Creation of geometries by Coordinate system methods using AutoCad

Creation of geometries by Coordinate system methods using AutoCad

AIM: To create the geometries from P1 to P2 using all the coordinates system methods, to use the Line tool and circle to create the geometries. TYPES OF COORDINATE SYSTEM Absolute Coordinates Relative rectangular coordinates Relative polar coordinates Direct distance entry. INTRODUCTION The main objective of this challenge…

    • KRISHNADAS K DAS

      updated on 07 Jun 2021

    AIM:

    To create the geometries from P1 to P2 using all the coordinates system methods, to use the Line tool and circle to create the geometries.

    TYPES OF COORDINATE SYSTEM

    • Absolute Coordinates
    • Relative rectangular coordinates
    • Relative polar coordinates
    • Direct distance entry.

    INTRODUCTION

    The main objective of this challenge is to gain knowledge on how to plot lines using the various coordinates systems available. The challenge is divided into four parts and in each part certain figures are to be drawn using the line and circle tool based on the four coordinates systems.

    In each part the figures will be drawn based on that particular coordinate system and the procedure for doing will be given for all questions.

    PART 1: ABSOLUTE COORDINATE SYSTEM

    Absolute coordinates refers to a Cartesian System that uses x-axis, y-axis, and sometimes a z-axis to establish a point some distance from a common origin. As an example, in a CAD program you could draw a line using absolute coordinates. To do this start by entering the (x,y) value of your origin point. Let us plot a figure using this coordinate system

    PART 2: RELATIVE RECTANGULAR COORDINATES

    Relative coordinates are based on the last point entered. Use relative coordinates when you know the location of a point in relation to the previous point.

    To specify relative coordinates, precede the coordinate values with an @ sign. For example, entering @3, 4 specifies a point 3 units along the X axis and 4 units along the Y axis from the last point specified.

    PART 3: RELATIVE POLAR COORDINATES

    Relative coordinates are also based on the last point entered. Use relative coordinates when you know the location of a point in relation to the previous point.

    To specify relative coordinates, precede the coordinate values with an @ sign. For example, entering @1<45 specifies a point at a distance of 1 unit from the last point specified at an angle of 45 degrees from the X axis.

    PART 4: DIRECT DISTANCE ENTRY

    Locates the next point at a specified distance in the direction of your cursor

    At a prompt to locate a point, enter a numeric value

    With direct distance entry, you can quickly specify a point relative to the last point you entered. At any prompt for a point location, you move the cursor first to specify the direction, and then enter a numeric distance.

    PROCEDURE TO DRAW A LINE:

    Line

    To Draw Line simple lines or series of lines segments .access to command line by one way of the following:

    1. Command Line: Line or L
    2. Menu Bar: Draw- Line
    3. Draw Bar
    4. Tool palettes: Draw- Line
    5. Ribbon: Home- Draw panel -Line

    When execute command line the program requires specify first point, display in command line:

    Specify first Point:

    Specify next point or [Undo]:

    Specify next point or [Close/Undo]:

    Options:

    • C: this option close series of lines, connect first point with last point by line.
    • U: enter U for undo. AutoCAD backs up one segment, undoing it so that you can recreate it.

    Let us understand the coordinates with the help of a few example questions.

    QNS 1)

    To draw the above figure the coordinate system follow these steps

    COMMAND

    Absolute Coordinates

    Relative rectangular coordinates

    Relative polar coordinates

    Direct distance entry.

    COMMAND

    Line

    Line

     

    Line

     

    Line

     

    Specify first point:

    2, 1

    2, 1

    2, 1

    2, 1

    Specify next point: 

    8, 1

    @6, 0

    @6<0

    6 and point right

    Specify next point:

    8, 2

    @0, 1

    @1<90

    1 and point up

    Specify next point:

    3, 2

    @-5, 0

    @5<180

    5 and point left

    Specify next point:

    3, 6

    @0, 4

    @4<90

    4 and point up

    Specify next point:

    8, 6

    @5, 0

    @5<0

    5 and point right

    Specify next point:

    8, 7

    @0, 1

    @1<90

    1 and point up

    Specify next point:

    2, 7

    @-6, 0

    @6<180

    6 and point left

    Specify next point:

    2, 1 or C

    @2, 1 or C

    @6<270 or c

    6 and point down or C

     

     RESULT

     

     

    QNS 2)

    COMMAND

    Absolute Coordinates

    Relative rectangular coordinates

    Relative polar coordinates

    Direct distance entry.

    COMMAND

    Line

    Line

    Line

    line

    Specify first point:

    2, 1

    2,1

    2, 1

    2,1

    Specify next point: 

    5, 1

    @3, 0

    @3<0

    3 and point right

    Specify next point:

    5, 5

    @0, 4

    @4<90

    4 and point up

    Specify next point:

    6, 5

    @1, 0

    @1<0

    1 and point right

    Specify next point:

    6,1

    @0, -4

    @4<270

    4 and point down

    Specify next point:

    9, 1

    @3, 0

    @3<0

    3 and point right

    Specify next point:

    7, 8

    @-2, 7

    @7<90 (line ab)

    7 and point up (line ab)

    Specify next point:

    4, 8

    @-3, 0

    @2<180 (line bc)

    2 and point left (line bc)

    Specify next point:

    2, 1 or C

    @-2, -7 or C

    @3<180

    3 and point left

     

     

     

    Delete line ab and bc

    Delete line ab and bc

     

     

     

    Connect a and c  and e and d using line command

    Connect a and c  and e and d using line command

     RESULT

     

     

    QNS 3)

    To draw the above figure using the coordinate system follow these steps

    COMMAND

    Absolute Coordinates

    Relative rectangular coordinates

    Relative polar coordinates

    Direct distance entry.

    COMMAND

    Line

    Line

    Line

    line

    Specify first point:

    2, 1

    2,1

    2, 1

    2,1

    Specify next point: 

    2,8

    @0, 7

    @7<90

    7 and point up

    Specify next point:

    3, 8

    @1, 0

    @1<0

    1 and point right

    Specify next point:

    5, 5

    @2, -3

    @2<0 (line ab)

    2 and point right

    Specify next point:

    7, 8

    @2, 3

    @2<0 (line bc)

    2 and point right

    Specify next point:

    8, 8

    @1, 0

    @1<0

    1 and point right

    Specify next point:

    8,1

    @0, -7

    @7< 270

    7 and point down

    Specify next point:

    7,1

    @-1, 0

    @1<180

    1 and point left

    Specify next point:

    7, 5

    @0, 4

    @4<90

    4 and point up

    Specify next point:

    5, 3

    @-2, -2

    @2<180 (Line de)

    2 and point left (Line de)

    Specify next point:

    3, 5

    @-2, 2

    @2<180 (Line ef)

    2 and point left (Line ef)

    Specify next point:

    3,1

    @0, -4

    @4<270 (Line fh)

    4 and point down (Line fh)

    Specify next point:

    2, 1 or C

    @2, 1 or C

    @1<180 or C

    1 and point left

    Command

     

     

    Line

    Line

    Specify first point:

     

     

    2,1

    2, 1

    Specify next point:

     

     

    @3<0 (line gi)

    3 point and right (line gi)

    Specify next point:

     

     

    @2<90 (line ij)

    2 point and right (line ij)

    Specify next point:

     

     

    @2<90 (line je)

    2 and point up (line je)

     

     

     

    Connect ae,ec, fj and jd

    Connect ae,ec, fj and jd

     

     

     

    Delete lines ab, bc, fe, ed,gh, hi and ij

    Delete lines ab, bc, fe, ed,gh, hi and ij

     RESULT

     

     

    QNS 4

    To draw the above figure using the coordinate system follow these steps

    COMMAND

    Absolute Coordinates

    Relative rectangular coordinates

    Relative polar coordinates

    Direct distance entry.

    COMMAND

    Line

    Line

    Line

    line

    Specify first point:

    2, 1

    2,1

    2, 1

    2,1

    Specify next point: 

    2,9

    @0, 8

    @8<90

    8 and point up

    Specify next point:

    9, 9

    @7, 0

    @7<0

    7 and point right

    Specify next point:

    9, 1

    @0, -8

    @8<270

    8 and point down

    Specify next point:

    5, 1

    @-4, 0

    @4<180

    4 and point left

    Specify next point:

    5, 2

    @0, 1

    @1<90

    1 and point up

    Specify next point:

    8, 2

    @3, 0

    @3< 0

    3 and point right

    Specify next point:

    8, 8

    @0, 6

    @6<90

    6 and point up

    Specify next point:

    3, 8

    @-5, 0

    @5<180

    5 and point left

    Specify next point:

    3, 1

    @0, -7

    @7<270

    7 and point down

    Specify next point:

    2, 1 or C

    @-1, 0 or C

    @1<180 or C

    1 and point left or C

     RESULT

     

     

    QNS 5)

    To draw the above figure using absolute coordinate system follow these steps

    COMMAND

    Absolute Coordinates

    Relative rectangular coordinates

    Relative polar coordinates

    Direct distance entry.

    COMMAND

    Line

    Line

    Line

    line

    Specify first point:

    2, 1

    2,1

    2, 1

    2,1

    Specify next point: 

    2,7

    @0, 6

    @6<90

    6 and point up

    Specify next point:

    10, 7

    @8, 0

    @8<0

    8 and point right

    Specify next point:

    10, 1

    @0, -6

    @6<270

    6 and point down

    Specify next point:

    2, 1 or C

    @-8, 0

    @8<180

    8 and point left

    COMMAND

    Line

    Line

    Line

    Line

    Specify first point:

    3, 2

    3, 2

    3, 2

    3, 2

    Specify next point:

    3, 5

    @0, 3

    @3<90

    3 and point up

    Specify next point:

    5, 5

    @2, 0

    @2<0

    2 and point right

    Specify next point:

    5, 2

    @0, -3

    @3<270

    3 and point down

    Specify next point:

    3, 2 or C

    @-2, 0 or C

    @2<180 or C

    2 and point left

    COMMAND

    Line

    Line

    Line

    Line

    Specify first point:

    6, 2

    6, 2

    6,2

    6,2

    Specify next point:

    6, 5

    @0, 3

    @3<90

    3 and point up

    Specify next point:

    8, 5

    @2, 0

    @2<0

    2 and point right

    Specify next point:

    8, 2

    @0, -3

    @3<270

    3 and point down

    Specify next point:

    6,2 or C

    @-2, 0 or C

    @2<180 or C

    2 and point left

     RESULT

     

     

    QNS 6)

    To draw the above figure using absolute coordinate system follow these steps

    COMMAND

    Absolute Coordinates

    Relative rectangular coordinates

    Relative polar coordinates

    Direct distance entry.

    COMMAND

    Line

    Line

    Line

    line

    Specify first point:

    0, 0

    0,0

    0, 0

    0, 0

    Specify next point: 

    10, 0

    @10, 0

    @10<0

    10 and point right

    Specify next point:

    10, 2

    @2, 0

    @2<90

    2 and point up

    Specify next point:

    6, 2

    @-4, 0

    @4<180

    4 and point left

    Specify next point:

    6, 6

    @0, 4

    @4<90

    4 and point up

    Specify next point:

    9, 6

    @3, 0

    @3<0

    3 and point right

    Specify next point:

    9, 8

    @0, 2

    @2<90

    2 and point up

    Specify next point:

    1, 8

    @-8, 0

    @8<180

    8 and point left

    Specify next point:

    1, 6

    @0, -2

    @2<270

    2 and point down

    Specify next point:

    4, 6

    @3, 0

    @3<0

    3 and point right

    Specify next point:

    4, 2

    @0, -4

    @4<270

    4 and point down

    Specify next point:

    0, 2

    @-4, 0

    @4<180

    4 and point left

    Specify next point:

    0, 0 or C

    @0, -2 or C

    @2<270 or C

    2 and point down or C

     RESULT

     

     

    QNS 7)

    To draw the above figure using the coordinate system follow these steps

    COMMAND

    Absolute Coordinates

    Relative rectangular coordinates

    Relative polar coordinates

    Direct distance entry.

    COMMAND

    Line

    Line

    Line

    line

    Specify first point:

    1,1

    1,1

    1,1

    1,1

    Specify next point: 

    6, 1

    @5, 0

    @5<0

    5 and point right

    Specify next point:

    6, 3

    @2, 0

    @2<90

    2 and point up

    Specify next point:

    3, 3

    @-3, 0

    @3<180

    3 and point left

    Specify next point:

    3, 2

    @0, -1

    @1<270

    1 and point down

    Specify next point:

    2, 2

    @-1, 0

    @1<180

    1 and point left

    Specify next point:

    2, 4

    @0, 2 (a)

    @2<90 (a)

    2 and point up (a)

    Specify next point:

    5, 4

    Line

    Line

    Line

    Specify next point:

    5, 6

    1, 1

    1, 1

    1, 1

    Specify next point:

    1, 8

    @0, 7 (b)

    @7<90 (b)

    7 and point up (b)

    Specify next point:

    1, 1 or C

    Join a and b

    Join a and b

    Join a and b

     RESULT

     

     

    QNS 8)

    To draw the above figure using the coordinate system follow these steps

    COMMAND

    Absolute Coordinates

    Relative rectangular coordinates

    Relative polar coordinates

    Direct distance entry.

    COMMAND

    Line

    Line

    Line

    line

    Specify first point:

    1, 1

    1,1

    1,1

    1,1

    Specify next point: 

    3, 1

    @2, 0

    @2<0

    2 and point right

    Specify next point:

    3, 4

    @0, 3

    @3<90

    3 and point up

    Specify next point:

    6, 4

    @3, 0

    @3<0

    3 and point right

    Specify next point:

    6, 8

    @0, 4

    @4<90

    4 and point up

    Specify next point:

    1, 8

    @-5, 0

    @5<180

    5 and point left

    Specify next point:

    1, 1 or C

    @0, -7 or C

    @7<270 or C

    7 and point down or C

    Command

    Line

    Line

    Line

    Line

    Specify first point:

    2, 5

    2,5

    2, 5

    2,5

    Specify next point:

    5, 5

    @3, 0

    @3<0

    3 and point right

    Specify next point:

    5, 7

    @0, 2

    @2<90

    2 and point up

    Specify next point:

    2, 7

    @-3, 0

    @3<1800

    3 and point left

    Specify next point:

    2, 5 or C

    @0, -2 or C

    @2<270

    2 and point down

     RESULT

     

    QNS 9)

    To draw the above figure using absolute coordinate system follow these steps

    Command: Line

    Specify first point: 0, 0

    Specify next point: 10, 0

    Specify next point: 10, 1

    Specify next point: 8, 1

    Specify first point: 8, 5

    Specify next point: 10, 5

    Specify first point: 10, 6

    Specify next point: 5, 9

    Specify next point: 0, 6

    Specify next point: 2, 6

    Specify first point: 2, 1

    Specify next point: 0, 1

    Specify next point: 0, 0 or C

    Command: Circle

    Specify centre point for circle: 5, 4

    Specify radius of circle: 2

    RESULT

     

     

    QNS 10)

    To draw the above figure using absolute coordinate system follow these steps

    Command: Line

    Specify first point: 1, 1

    Specify next point: 1, 5

    Specify next point: 4.5, 8.5

    Specify next point: 8, 5

    Specify first point: 8, 1

    Command: Line

    Specify first point: 1, 5

    Specify next point: 8, 5

    Command: Line

    Specify next point: 2, 5

    Specify first point: 2, 6

    Specify next point: 4.5, 5

    Specify next point: 7, 6

    Specify next point: 7, 5

    Command: Line

    Specify first point: 4.5, 5

    Specify next point: 4.5, 8.5

    RESULT

     

     

    QNS 11)

    Command: Line

    Specify first point: 1, 1

    Specify next point: 7, 1

    Specify next point: 7, 3

    Specify next point: 1, 1 or C

    Command: Line

    Specify first point: 3, 1

    Specify next point: 3, 1.667

    Specify next point: 5, 1

    Specify next point: 5, 2.333

    Specify next point: 7, 1

    RESULT

     

     

    RESULTS:

    Created the geometries from P1 to P2 using all the coordinates system methods and used Line tool and circle tool to create the geometries.

    Appendix:

    Qns 2) Additional lines with names for finding the end points of figure are provided here

    Qns 3) Additional lines with names for finding the end points of figure are provided here

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