Constructs the triangle primitive. 
   Namespace:   Autodesk.Revit.DB.DirectContext3D  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 18.0.0.0 (18.2.0.0) 
  Since:  2017 
Syntax
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Parameters
- index0
-  Type:  System Int32  
 The index of the triangle's first vertex.
- index1
-  Type:  System Int32  
 The index of the triangle's second vertex.
- index2
-  Type:  System Int32  
 The index of the triangle's third vertex.