The document discusses the basic drawing objects in AutoCAD including lines, circles, rectangles, arcs, splines, polygons, regions, and ellipses. It provides details on how to use the line, circle, and rectangle drawing tools, describing the different methods to select points and specify dimensions to create each object type. Lines are the simplest object and can be used as construction lines to build other parts of the drawing.

2.  Lines
 Lines are probably the most simple of AutoCAD
objects. Using the Line command, a line can be
drawn between any two points picked within the
drawing area. Lines are usually the first objects you
will want to draw when starting a new drawing
because they can be used as "construction lines"
upon which the rest of your drawing will be based.
Never forget that creating drawings with AutoCAD
is not so dissimilar from creating drawings on a
drawing board. Many of the basic drawing
methods are the same.

3. Line
Rectangle
Spline
Region
Xline
Arc
Ellipse
Polyline /
Pline
Circle
Ellipse Arc
Polygon
Revcloud
Point Style

4. 
With the Line command you can
draw a simple line from one
point to another.

5. 
Construction Line / Xline is used to create a
line of infinite length which passes through
two picked points.

6. The Polyline or Pline command is similar to the
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line command except that the resulting object
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may be composed of a number of segments which
form a single object.
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7. 
The Polygon command can be used to
draw any regular polygon from 3 sides
up to 1024 sides.

8. 
The Rectangle command is used to draw a
rectangle whose sides are vertical and
horizontal. The position and size of the
rectangle are defined by picking two diagonal
corners.

9. 
Arc Is used to draw an arc of a circle
and It is possible to create an arc by
trimming a circle object.

10.  The Circle command is used to draw circles. There are
 a number of ways you can define the circle.

11. 
RevCloud is used to draw a "freehand“
revision cloud or to convert any closed
shape into a revision cloud.

12. 
The Spline command creates a type of spline
known as a non-uniform rational B-spline,
NURBS for short. A spline is a smooth curve that
is fitted along a number of control points.

13. The Ellipse command gives you a number of different
creation options. The default option is to pick the two
end points of an axis and then a third point to define the
eccentricity of the ellipse.

14.  The Ellipse Arc command is very similar to the Ellipse
command.
The only difference is that, in addition to specifying the
two axis end points and the "distance to other axis" point,
you are prompted for a start and end angle for the arc.

15.  The point command will insert a point marker in your
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drawing at a position which you pick in the
drawing window or at any co-ordinate location
which you enter at the keyboard.

16. 
A region is a surface created from objects
that form a closed shape, known as a loop.

17.  DRAWING LINE :
 Method 1:
 1. Select the line symbol
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from the draw menu.
2. Select a starting point for the line segment.
3. Select an end point for the line segment.
4. Hit Enter.
Method 2:
1. Type Line or L in the command line.
2. Select a starting point for the line segment.
3. Select an end point for the line segment.
4. Hit Enter.

18.  Method 3:
 1. Select the line symbol
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from the draw menu
or type Line or L in the command line.
2. Select a starting point for the line segment.
3. Move the cursor in the line direction.
4. Enter the length of the line segment, for
example: type 3’ or 3”.
5. Hit Enter.
6. Hit Enter again to get out of the command.

19. 
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You can create circles in many different ways.
Method 1:
1. Select the circle symbol
from the draw menu.
2. Click on the screen where you want to specify the center point for the
circle.
3. Drag the mouse across to specify a node of the circle.
4. Click.
Method 2:
1. Type Circle or C in the command line.
2. Hit Enter.
3. Click on the screen where you want to specify the center point for the
circle.
4. Drag the mouse across to specify a node of the circle.
5. Click.

20.  Method 3:
 1. Select the circle symbol
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from the draw menu, or
type Circle or C in the command line.
2. Click on the screen where you want to specify the
center point for the circle.
3. Specify the radius or diameter of the circle by typing
R or D.
4. Hit Enter.
5. Input the numeric value.
6. Hit Enter.

21.  Method 1:
 1. Select the Rectangle symbol
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from the draw
menu.
2. Specify on the screen the first corner for the
rectangle you want to draw.
3. Type D to specify the dimension for the rectangle.
4. Input t the length.
5. Input t the width.
6. Click anywhere inside the rectangle area to get out
of the command.

22.  Method 2:
 1. Type RECTANG or REC in the command line.
 2. Specify on the screen the first corner for the
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rectangle you want to draw.
3. Type D to specify the dimension for the rectangle.
4. Input t the length.
5. Input t the width.
6. Click anywhere inside the rectangle area to get out
of the command.