How To: Divide a circle polygon feature into segments of a specific angle in ArcMap

Summary

A circle polygon can be divided into segments by using the Cut Polygon tool in an edit session. To get a specific angle in each cut, a line feature is created to project the lines needed to be traced with the specific angle.
After using the Cut Polygon tool [O-Image], the circle polygon can be divided by tracing along the line feature, set to a specific angle.

Procedure

Instructions provided describe how to divide a circle polygon feature into segments of a specific angle in ArcMap:

  1. Start Arcmap.
  2. Find the centroid of the circle feature class, and note the center X and Y coordinates. For more information, refer to the following article: HowTo: Calculate feature centroids.
  3. Create a new file geodatabase under the desired folder connection; right-click the desired folder: New > File Geodatabase.
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  4. Create a new table in the newly created file geodatabase; right-click the file geodatabase: New > Table.
    [O-Image]
  5. Create four fields in the table: distance, bearing, latitude, and longitude, and click Finish.
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  6. Start an edit session on the table, and insert the values. Use the same value for distance, and use the X and Y values from step 2 for latitude and longitude, respectively. Specify the bearing values in an increasing order with the desired interval.
    [O-Image]
  7. Navigate to ArcToolbox, Data Managements Tools: Features > Bearing Distance To Line.
  8. Complete the required fields accordingly, with reference to the previous table in the Bearing Distance To Line tool window. Ensure the Bearing Units field is set to DEGREES.
    [O-Image]
  9. Start an edit session on the desired polygon feature, and select the Cut Polygons tool [O-Image].
  10. Trace the line accordingly with the line feature created in step 7-8. The polygon is now divided to the desired specific angle.
    [O-Image]

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