To Retriangulate a Mesh

Select the Retriangulate tool ( Modeling > Mesh > Mesh Utilities ).
Select the Individual selection method.
Select a mesh element.
Select facets of the mesh.
Do one of the following:

To include the interior vertices of the selected facets, click the Boundary and Interior icon in the tool settings.

or
To exclude interior vertices of selected facets, click the Boundary only icon in the tool settings.
Enter a data point.