autocad tutorial chapter 2

8/13/2019 AutoCAD Tutorial Chapter 2

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Learning Objectives

LINE command.

Coordinate systems. ERASE tool. Object selection methods: Window and Crossing. CIRCLE command. ZOOM and PAN commands. UNITS command. Limits of a given drawing. Plot drawings. Options dialog box.


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Drawing Lines in AutoCADRibbon : Home > Draw > LineToolbar : Draw > LineMenu Bar : Draw > LineTool Palettes : Draw > LineCommand : LINE or L

Invoking the Tool Palettesfrom the Palettes menu Invoking the LINE commandfrom the Draw toolbar

The Line tool in the Draw

panel


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Drawing lines using the LINE command


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The LINE command has the following three options:

Continue

Undo

Close


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Coordinate Systems

1. Absolute coordinates

2. Relative coordinatesa. Relative rectangular coordinatesb. Relative polar coordinates

3. Direct distance entry


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Lines created using the absolutecoordinates

Command: LINE _line Specify first point: 1,1

(X = 1 and Y = 1.)Specify next point or [Undo]: 4,1(X = 4 and Y = 1.)Specify next point or [Undo]: 4,3Specify next point or [Close /Undo]: 1,3Specify next point or [Close/Undo]: C

Absolute Coordinates


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Example 1

Drawing a figure using the absolute coordinates


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Drawing lines using the relativerectangular coordinates

Command: LINE _line Specify first point: 1,1 (Start point)Specify next point or [Undo]: @4,0(Second point DX = 4, DY = 0.)Specify next point or [Undo]: @0,3(Third point DX = 0, DY = 3.)Specify next point or [Close/Undo]:@-4,0 (Fourth point DX = -4, DY = 0.)Specify next point or [Close/Undo]: @0,-3(Start point DX = 0, DY = -3.)Specify next point or [Close/Undo]:

Relative Rectangular Coordinates

Relative Coordinate System


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Example 2

Profile for Example 2


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Drawing a line using relativepolar coordinates

Relative Polar Coordinates

Command: LINESpecify first point: 1,1Specify next point or [Undo]: @5


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Example 3

Drawing for Example 3


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Direct Distance EntryCommand: LINE

_line Specify first point: Start point.

Specify next point or [Undo]: Position the cursor and then enter distance.Specify next point or [Undo]: Position the cursor and then enter distance.

Drawing lines using the DirectDistance Entry method


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Example 4



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Canceling and Undoing a Command

Object Selection Methods

The Crossing OptionThe Window Option

Selecting objects using the Windowoption

Selecting objects using the WindowCrossing option


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Drawing a CircleCommand : CIRCLE or CToolbar : Draw > CircleMenu Bar : Draw > CircleTool Palettes : Draw > CircleRibbon : Home > Draw > Circle drop-down >

Center , Radius

Tools in the Circledrop-down

The options of the CIRCLE commandCenter and Radius Center and DiameterTwo-Point Three-PointTangent, Tangent, Radius Tangent, Tangent, Tangent


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Drawing a circle by specifyingthe center and the radius

Drawing a circle by specifyingthe center and the diameter

A circle drawn by using the2-Point option

A circle drawn by using the3-point option


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Drawing a circle tangent totwo objects



Drawing a circle tangent to twoobjects


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Drawing a circle tangent to threeobjects


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Basic Display Commands

Zooming Drawings

The Zoom tools inthe Navigator Bar


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Setting Units Type and PrecisionApplication Menu : Drawing utilities > UnitsCommand : UNITS

The Drawing Units dialog box


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Setting the Direction for Angle Measurement

The Direction Control dialog boxNorth, South, East, and Westdirections

Specifying Units for the Drawing or Block to be Inserted

Sample Output

Specifying Units for Lighting


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Example 5



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Setting Limits of a Drawing

Limits for Architectural Drawings

Command: LIMITS

Setting limits in a drawing

Setting limits


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Example 6


Limits for Metric Drawings


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Introduction to Plotting DrawingsRibbon : Output > Plot > PlotToolbar : Quick Access > Plot

Application Menu : Print > PlotCommand : PLOT or PRINT

The Plot dialog box

Basic Plotting


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Modifying AutoCAD Settings using theOptions dialog box

Files Display Open and Save

Plot and Publish System User Preferences Drafting 3D Modeling

Selection Profiles

Application Menu : OptionsCommand : OPTIONS

The Options dialog box

autocad tutorial chapter 2

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