+++ /dev/null
-.. _aspect_ratio_3d_page:
-
-***************
-Aspect ratio 3D
-***************
-
-The **Aspect Ratio 3D** mesh quality criterion calculates the same parameter as the :ref:`aspect_ratio_page` criterion, but it is applied to 3D mesh elements: tetrahedrons, pentahedrons, hexahedrons, etc.
-
-* The **Aspect Ratio** of a **tetrahedron** 3D element defined by vertices {a,b,c,d } is calculated by the formula:
-
- .. image:: ../images/formula1.png
- :align: center
-
-* Other element types like polyhedron, pentahedron and hexahedron use the following formula:
-
- .. image:: ../images/formula2.png
- :align: center
-
-*To apply the Aspect Ratio 3D quality criterion to your mesh:*
-
-.. |img| image:: ../images/image144.png
-
-#. Display your mesh in the viewer.
-#. Choose **Controls > Volume Controls > Aspect Ratio 3D** or click *"Aspect Ratio 3D"* button |img| of the toolbar.
-
- Your mesh will be displayed in the viewer with its elements colored according to the applied mesh quality control criterion:
-
- .. image:: ../images/image86.jpg
- :align: center
-
-
-**See Also** a sample TUI Script of a :ref:`tui_aspect_ratio_3d` filter.
