csharp using System; using Simplex3D.Math; class Program { static void Main() { Vector3D vector1 = new Vector3D(1, 2, 3); Vector3D vector2 = new Vector3D(4, 5, 6); double dotProduct = Vector3D.Dot(vector1, vector2); Vector3D crossProduct = Vector3D.Cross(vector1, vector2); } }