How to Draw an Arc Tangent to a
Straight Line and a Given Arc
or Circle 134
How to Draw Tangent Arcs 135
How to Divide a Line into a Given
Number of Equal Divisions 136
How to Construct an Ellipse Using
Concentric Circles 137
How to Construct an Ellipse Using the
Parallelogram Method 138
How to Construct an Ellipse Using
the Four-Center Approximation
Method 139
Chapter
7
Computer-Aided Drafting
and Design 151
Overview of Computer Graphics
and CAD 152
How CAD Works 154
File Management Functions 155
Basic CAD System Functions 156
Coordinate Systems 156
Drawing Aids 161
Layers and Linetypes 162
Blocks 162
Drawing Setup Functions 164
Creating Objects 165
Drawing Lines 165
Drawing Circles and Arcs 165
Drawing Ellipses 166
Drawing Polygons 166
Editing and Modifying Objects 167
Moving Objects 167
Copying Objects 167
Rotating Objects 167
Scaling Objects 167
Undoing a Command 167
Erasing Objects 168
Arraying Objects 168
Mirroring Objects 168
Creating Rounded and Angled
Corners 168
Trimming and Extending Lines 169
Using Display Commands 170
Using Measurement, Object Property,
and Drawing Status Commands 170
Using Help System Functions 171
CAD File Management and Storage
Practices 171
Saving, Backing Up, and Archiving
Files 172
CAD Systems and Software 173
CAD Modeling Programs 173
CAD/CAM 175
Advanced Rendering and Animation
Programs 175
Chapter
8
Lettering 187
Single-Stroke Gothic Lettering 188
Lettering with a Pencil 189
Guidelines 189
Spacing 190
Letter Height 192
Lettering Aids and Devices 192
Mechanical Lettering Device 193
Preprinted Lettering 193
Lettering in CAD 194
Chapter
9
Multiview Drawings 203
Visualizing the Object and Projecting
Views 205
Identifying Object Features 209
Primary and Secondary Views 211
True Faces and Foreshortening 212
10 10 10 Exploring Ex Ex pl pl or or in in g g Drafting Dr Dr af af ti ti ng ng