1. A method for identifying and measuring a feature on tessellated geometry, comprising: providing, by a processor, an image of a part on a display using an electronic representation of the part, the part comprising a tessellated geometry and the tessellated geometry, in the electronic representation, comprising a collection of triangles defined by vertices of each triangle; receiving, by the processor, selection of a feature of the part, the feature being on the tessellated geometry of the part; choosing, by the processor, a first triangle of the collection of triangles of the tessellated geometry that is associated with the selected feature; determining, by the processor, at least a first vertex and a second vertex of the first triangle; determining, by the processor, a predefined normal to at least each of the first vertex and the second vertex of the first triangle; and using, by the processor, the predefined normals from at least the first vertex and the second vertex to identify and measure the feature of the part, wherein using the predefined normals provides a faster mechanism to identify and measure the feature than using point fitting of the vertices alone to identify and measure the feature.