The collapse tool can be used to remove polygons.

Modes
The collapse tool can only be applied on raw polygon objects. It's available in point, edge and polygon mode.

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  To use the collapse tool, click on one polygon of a raw polygon object. The polygon will then be removed and all its corners will be welded into one point which is either in the middle of the former polygon or at the position of the mouse click.
  Please use the weld tool for collapsing an edge.

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Properties

• To: Specifies the position to which the polygon corners will collapse.
  • click: The polygon corners will collapse to the position of the mouse click.
  • middle: The polygon corners will collapse to the middle point of the polygon.