public static void LocalCoordinates()
{
EquilateralTriangle triangle = new EquilateralTriangle(8);
IList <CartesianCoordinate> coordinates = triangle.LocalCoordinates();
Assert.AreEqual(3, coordinates.Count);
Assert.AreEqual(triangleCoordinates[0], coordinates[0]);
Assert.AreEqual(triangleCoordinates[1], coordinates[1]);
Assert.AreEqual(triangleCoordinates[2].X, coordinates[2].X, Tolerance);
Assert.AreEqual(triangleCoordinates[2].Y, coordinates[2].Y, Tolerance);
}