7 **Skew** mesh quality criterion reflects the angle between the lines
8 that join opposite sides of a quadrangle element or the greatest angle
9 between a median and a midline in a triangle element. This mesh quality
10 criterion can be applied to elements composed of 4 and 3 nodes
11 (quadrangles and triangles).
13 .. image:: ../images/image27.jpg
16 *To apply the Skew quality criterion to your mesh:*
18 .. |img| image:: ../images/image40.png
20 #. Display your mesh in the viewer.
21 #. Choose **Controls > Face Controls > Skew** or click *"Skew"* button |img| of the toolbar.
23 Your mesh will be displayed in the viewer with its elements colored according to the applied mesh quality control criterion:
25 .. image:: ../images/image93.jpg
29 **See Also** a sample TUI Script of a :ref:`tui_skew` filter.