Autodesk AUTOCAD 2010 - PREVIEW GUIDE Guia do Utilizador descarregar pdf (Página 86)

72 ■ Chapter 2: Creating Basic Drawings

Practice Exercise: Circle Command

In this practice exercise, you use the Tan, Tan, Radius,

Circle command and the 2-Point Circle. First, you

draw two adjacent lines that are 5.25 units each.

1.

Begin a new drawing.

2.

In the Select template dialog box, select the

acad template file (dwt) and click Open.

3.

Be sure the following status bar settings are

on:

■ Polar tracking

■ Object snap

■ Object snap tracking

4.

To draw the lines:

■ Start the Line command.

■ For the start point, select the endpoint of

the line (1).

■ Drag the mouse down until the Polar angle

indicates that it is < 270. Enter 5.25 and

press ENTER.

■ Drag the mouse to the right until the Polar

angle indicates < 0. Enter 5.25 and press

ENTER.

■ Press ENTER to end the Line command.

5.

Adjust the display of your drawing using Zoom

or Pan Real-time, if necessary.

6.

To draw the smaller circle (3):

■ On the ribbon, click Home tab > Draw

panel > Circle drop-down > Tan, Tan,

Radius.

■ Move the cursor to the vertical line until

you see the Deferred Tangent object snap

and then click.

■ Now move the cursor to the horizontal line

until you see Deferred Tangent again and

click.

■ Specify the radius of the circle. Enter 2 and

press ENTER.

7.

To draw the larger circle (4):

■ On the Home tab, click Draw panel > Circle

drop-down > 2-Point.

■ Move the cursor to the end of the vertical

line (1) until you see the Endpoint object

snap and click.

■ Now move the cursor to the end of

the horizontal line (2) until you see the

Endpoint object snap and click.

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