Based on Lilian's comment, but modified to fit your situation. Needs["NDSolve`FEM`"]; Ω = MeshRegion[ {{0, 0}, {2/Sqrt[3], 0}, {1/Sqrt[3], 1}}, {Line[{{1, 2}, {2, 3}, {3, 1}}]}]; mesh["Coordinates"] // Length > 59