AutoCAD 2018 and Inventor 2018 Tutorial By Tutorial Books (www.engbookspdf.com)

Part 1: AutoCAD Basics
Activate the Spline CV button.
Next, press ENTER; the message, “Specify
Select Object from the command line.
distance to other axis or [Rotation]:”
Select the polyline and press Enter; the
appears in the command line.
polyline is converted in a spline.
Type 10 and press ENTER; the ellipse will
be created.
Example 2 (Axis, End)
Drawing Ellipses
Ellipses are also non-uniform curves, but they have
a regular shape. They are actually splines created in
In this example, you will draw an ellipse by
specifying three points. The first two points define
the location and length of the first axis. The third
point defines the second axis of the ellipse.
a regular closed shape. In AuoCAD, you can draw
an ellipse in three different ways by using the tools
available in the Ellipse drop-down of the Draw
panel. The three different ways to draw ellipses are
explained in following examples.
Example 1 (Center)
In this example, you will draw an ellipse by
specifying three points. The first point defines the
center of the ellipse. Second and third points define
the two axes of the ellipse.
Activate the Dynamic Input on the status
bar, if it is not active.
Click Home > Draw > Ellipse > Axis, End
on the ribbon.
Select an arbitrary point to specify an axis
endpoint.
Type 50 as length of the first axis and press
TAB.
Click Home > Draw > Ellipse > Center
Type 60 as angle and press ENTER.
on the ribbon; the message, “Specify
Type 10 as radius of the second axis and
center of ellipse:” appears in the command
press ENTER; the ellipse will be created
line.
inclined at 60-degree angle.
Select an arbitrary point in the graphics
window; the message, “Specify endpoint of
axis:” appears in the command line.
Move the pointer horizontally and type 20.
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