Photoshop

Select with the Polygonal Lasso tool

The Polygonal Lasso tool is useful for drawing straight-edged segments of a selection border.

  1. Select the Polygonal Lasso tool , and select options.
  2. Specify one of the selection options in the options bar.
    Selection options

    A.
    New

    B.
    Add To

    C.
    Subtract From

    D.
    Intersect With

  3. (Optional) Set feathering and anti-aliasing in the options bar. See Soften the edges of selections.
  4. Click in the image to set the starting point.
  5. Do one or more of the following:

    • To draw a straight segment, position the pointer where you want the first straight segment to end, and click. Continue clicking to set endpoints for subsequent segments.

    • To draw a straight line at a multiple of 45°, hold down Shift as you move to click the next segment.

    • To draw a freehand segment, hold down Alt (Windows) or Option (Mac OS), and drag. When you finish, release Alt or Option and the mouse button.

    • To erase recently drawn straight segments, press the Delete key.

  6. Close the selection border:

    • Position the Polygonal Lasso tool pointer over the starting point (a closed circle appears next to the pointer), and click.

    • If the pointer is not over the starting point, double-click the Polygonal Lasso tool pointer, or Ctrl-click (Windows) or Command-click (Mac OS).

  7. (Optional) Click Refine Edge to further adjust the selection boundary or view the selection against different backgrounds or as a mask. See Refine selection edges.