- Chapter Objectives
- EXERCISE 3-1 Drawing a Rectangular Conference Room, Including Furniture
- Making a Drawing Template
- Polyline
- OFFSET
- EXPLODE
- ID Point
- TRIM
- Rectangle
- CHAMFER
- FILLET
- COPY and Osnap-Midpoint
- ROTATE
- POINT
- DIVIDE
- MEASURE
- OSNAP
- MIRROR
- Osnap Modes That Snap to Specific Drawing Features
- Running Osnap Modes
- Osnap Settings: Marker, Aperture, Magnet, Tooltip
- EXERCISE 3-2 Drawing a Rectangular Lecture Room, Including Furniture
- Making Solid Walls Using Polyline and Solid Hatch
- From
- BREAK
- Polyline Edit
- HATCH
- ARRAY
- ARRAYEDIT
- Distance
- Exercise 3-3 Drawing a Curved Conference Room, Including Furniture
- Polyline
- POLYGON
- Grips—Add Vertex
- Grips—Convert to Arc
- ARRAY
- Exercise 3-4 Drawing a Conference Room Using Polar Tracking
- Polar Tracking
- Polyline Edit
- Specifying Points with Tracking
- Drawing the Chairs around the Conference Table
- Completing the Conference Room
- Using Command Preview
- Choosing Selection Options
This chapter is from the book
This chapter is from the book
This chapter is from the book
POLYGON
POLYGON: Command that draws a polygon with 3 to 1024 sides.
The POLYGON command draws a regular polygon with 3 to 1024 sides. After you specify the number of sides, the Polygon prompt is Specify center of polygon or [Edge]:. When you specify the center of the polygon (default option), the polygon can then be inscribed in a circle or circumscribed about a circle. When the polygon is inscribed in a circle, all the vertices lie on the circle, and the edges of the polygon are inside the circle. When the polygon is circumscribed about a circle, the midpoint of each edge of the polygon lies on the circle, and the vertices are outside the circle. A polygon is a closed polyline.
POLYGON |
|
|---|---|
Ribbon/Panel |
Home/Draw (Rectangle flyout)
|
Draw Toolbar: |
|
Menu Bar: |
Draw/Polygon |
Type a Command: |
POLYGON |
Command Alias: |
POL |
Step 15. Use the POLYGON command to draw the conference table (Figure 3-39), as described next:
Figure 3-39 Locate the polygon
Prompt
Response
Type a command:
Polygon (or type POL <Enter>)
Enter number of sides <4>:
Type 8 <Enter>
Specify center of polygon or [Edge]:
P1→ (Figure 3-39)
Enter an option [Inscribed in circle Circumscribed about circle]<I>:
Type I <Enter> (or just <Enter> if I is the default)
Specify radius of circle:
Type 48 <Enter>
)
The method of specifying the radius controls the orientation of the polygon. When you specify the radius with a number, as in the preceding responses, the bottom edge of the polygon is drawn at the current snap angle—horizontal in the polygon just drawn. When you specify the radius of an inscribed polygon with a point, a vertex of the polygon is placed at the point location. When you specify the radius of a circumscribed polygon with a point, an edge midpoint is placed at the point’s location.
Edge
When you select the Edge option of the prompt, AutoCAD prompts Specify first endpoint of edge: and Specify second endpoint of edge:. The two points entered at the prompts specify one edge of a polygon that is drawn counterclockwise.
Step 16. Use the Polyline or Rectangle command to draw a rectangle 36″ long × 12″ wide in the center of the polygon just drawn (Figure 3-40A). This is a good exercise to learn how to specify the center of the polygon as reference point (use From followed by Mid Between 2 Points from the Osnap menu) to construct the rectangle. After defining the center as the reference point, define the upper-left and lower-right corners with @-18,6 and @38,-12, respectively. Try this on your own or ask your instructor to demonstrate it.
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