Lasso Tool
The lasso tool consist of the 
Freehand Lasso Tool and the Polygonal Lasso Tool. These tools are used to make free-hand and polygonal selections of the active layer.
To start the Lasso tool
- Choose Edit > Tool > Lasso > Free or Polygonal from the menu.
- Click icon or icon in the tools panel.
- Press L, Shift + L keys.
Tool Options
Make Selections
-
Freehand Lasso
Using the ordinary lasso tool, simply click and drag a freehand selection with your mouse.
Figure. -
Polygonal Lasso
click to make various points which will define a selection, and finish your selection by clicking the starting point or pressing Enter key.
Figure.
To move the selection, see Moving Region selections.