Select the Polygonal Lasso tool from the toolbar.
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Draw straight-edged segments of a selection border
Last updated on
Oct 27, 2025
Learn to use the Polygonal Lasso tool to draw precise, straight-edged selections in Adobe Photoshop.
Select a selection mode from the Options bar.
Type a Feather value and select the Anti-alias checkbox to smooth selection edges.
Select on the canvas to set the starting point of your selection.
- To draw a straight segment, select again where you want the segment to end.
- To constrain a segment to a 45° angle, hold Shift and select the next point.
- To draw a freehand segment, hold Alt (Windows) or Option (macOS) and drag.
- To undo the last segment, press the Delete key.
To close the selection,
- Select at the starting point when the circular icon appears over Polygonal Lasso icon.
- Double-click or press Ctrl+click (Windows) or Command+click (macOS) to close the selection if you're not at the starting point.
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