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

Part 1: AutoCAD Basics
below using the Line tool.
Click Home > Modify > Erase on the ribbon
or Enter ERASE or E in the command line.
Drawing Circles
Select the lines shown below and press
ENTER. This erases the lines.
The tools in the Circle drop-down on the Draw
panel can be used to draw circles. You can also typein
the CIRCLE command in the command line and
create circles. There are various methods to create
circles. These methods are explained in the
following examples.
Example 1(Center, Radius)
In this example, you will create a circle by
specifying its center and radius value.
Click the Undo button on the Quick Access
Toolbar. This restores the lines.
Click the Redo button on the Quick Access
Toolbar. This erases the lines again.
Click Home > Draw > Circle > Center,
Type E in the command line and press the
SPACEBAR; the ERASE command will be
activated.
Drag a selection lasso as shown below and
press ENTER; the entities will be erased.
Radius on the ribbon.
Select an arbitrary point in the graphics
window to specify the center point.
Type 20 as the radius and press ENTER.
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