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Polygons

May 20, 2011

Creating polygons is a simple way to draw squares, equilateral triangles, octagons, and so on. Polygons are closed polylines with between 3 and 1,024 equal-length sides.

However, you should keep one thing in mind that rectangles are created by RECTANG command rather than POLYGON.

Variety of ways can be used for creating a polygon, for example, specify the center point or one of its edges to define a polygon after you have determined the edges of polygon. If you want to draw a polygon based on another object, the following methods are provided with some given qualifications:

  •      Specifying the radius of inscribed circle if the distance between the center of the polygon and the endpoint of each side (inscribed) is known

  •      Specifying the radius of circumscribed circle if the distance between the center of the polygon and the midpoint of each side (circumscribed) is known

  •      Specifying the length of an edge and where you want to place it

To draw a polygon by vertex

  1.   Choose Draw > Polygon.

  2.   Type 5 to specify five sides for the polygon.

  3.   Specify the center of the polygon.

  4.   Specify the vertex of the polygon.

Draw toolbar\

Command line POLYGON

\

 

The center (A) andvertex (B) Resulting polygon.

Commands Reference

BOUNDARY: Creates a region or a polyline from an enclosed area

EXPLODE: Breaks a compound object into its component objects

POLYGON: Creates an equilateral closed polyline

RECTANG: Draws a rectangular polyline

System Variables Reference

FILLMODE: Specifies whether hatches (including solid-fill), two-dimensional solids, wide polylines, are filled in

HPBOUND: Controls the object type created by the BHATCH and BOUNDARY commands

PLINEWID: Stores the default polyline width

POLYSIDES: Sets the default number of sides for the POLYGON command

SNAPANG: Sets the snap and grid rotation angle for the current viewport


 

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