Autodesk 057B1-41A111-1001 - AutoCAD LT 2010, User Manual

Page: 192 / 574

Here is the command prompt sequence:
Command:
circle
Specify center point for circle or [3P/2P/Ttr (tan tan
radius)]:
'cal
>> Expression:
(mid+cen)/2
>> Select entity for MID snap:
Select the notch line (1)
>> Select entity for CEN snap:
Select the large circle (2)
Diameter/<Radius>:
'cal
>> Expression:
1/5*rad
>> Select circle, arc or polyline segment for RAD function:
Select the large circle (3)
Use the Command Prompt Calculator
To start the Command prompt calculator
Do one of the following:
■ At the Command prompt, enter CAL. Then, enter a CAL expression.
■ At a prompt for a command in progress, enter ‘CAL to start the CAL
command transparently. Then, enter a CAL expression to calculate a value
for that prompt.
Create Objects
Drawings are made up of objects. In general, you draw objects by specifying
points with the pointing device or by entering coordinate values at the
Command prompt.
You can create a range of objects, from simple lines and circles to spline curves,
and ellipses. In general, you draw objects by specifying points with the pointing
device or by entering coordinate values at the Command prompt.
Draw Linear Objects
A line, the most basic object, can be one segment or a series of connected
segments.
172 | Chapter 6 Create and Modify Objects