diff --git a/Changelog.txt b/Changelog.txt
new file mode 100644
index 0000000..224a9e3
--- /dev/null
+++ b/Changelog.txt
@@ -0,0 +1,16 @@
+# Nerd_STF v2.0.1
+
+* Nerd_STF
+    * Mathematics
+        * Geometry
+            * Line
+                + ToDoubleArray()
+                + ToDoubleList()
+            * Triangle
+                + ToDoubleArray()
+                + ToDoubleList()
+            * Vert
+                + : IGroup\<Vert>
+                + GetEnumerator()
+                + ToArray()
+                + ToList()
diff --git a/Nerd_STF/Mathematics/Geometry/Line.cs b/Nerd_STF/Mathematics/Geometry/Line.cs
index 542d38d..431f265 100644
--- a/Nerd_STF/Mathematics/Geometry/Line.cs
+++ b/Nerd_STF/Mathematics/Geometry/Line.cs
@@ -127,6 +127,11 @@ namespace Nerd_STF.Mathematics.Geometry
         public Vert[] ToArray() => new Vert[] { start, end };
         public List<Vert> ToList() => new() { start, end };
 
+        public double[] ToDoubleArray() => new double[] { start.position.x, start.position.y, start.position.z,
+                                                          end.position.x, end.position.y, end.position.z };
+        public List<double> ToDoubleList() => new() { start.position.x, start.position.y, start.position.z,
+                                                      end.position.x, end.position.y, end.position.z };
+
         public static Line operator +(Line a, Line b) => new(a.start + b.start, a.end + b.end);
         public static Line operator +(Line a, Vert b) => new(a.start + b, a.end + b);
         public static Line operator -(Line a, Line b) => new(a.start - b.start, a.end - b.end);
diff --git a/Nerd_STF/Mathematics/Geometry/Triangle.cs b/Nerd_STF/Mathematics/Geometry/Triangle.cs
index 8709918..9b6e631 100644
--- a/Nerd_STF/Mathematics/Geometry/Triangle.cs
+++ b/Nerd_STF/Mathematics/Geometry/Triangle.cs
@@ -220,6 +220,13 @@ namespace Nerd_STF.Mathematics.Geometry
         public Vert[] ToArray() => new Vert[] { A, B, C };
         public List<Vert> ToList() => new() { A, B, C };
 
+        public double[] ToDoubleArray() => new double[] { A.position.x, A.position.y, A.position.z,
+                                                          B.position.x, B.position.y, B.position.z,
+                                                          C.position.x, C.position.y, C.position.z };
+        public List<double> ToDoubleList() => new() { A.position.x, A.position.y, A.position.z,
+                                                      B.position.x, B.position.y, B.position.z,
+                                                      C.position.x, C.position.y, C.position.z };
+
         public static Triangle operator +(Triangle a, Triangle b) => new(a.A + b.A, a.B + b.B, a.C + b.C);
         public static Triangle operator +(Triangle a, Vert b) => new(a.A + b, a.B + b, a.C + b);
         public static Triangle operator -(Triangle a, Triangle b) => new(a.A - b.A, a.B - b.B, a.C - b.C);
diff --git a/Nerd_STF/Mathematics/Geometry/Vert.cs b/Nerd_STF/Mathematics/Geometry/Vert.cs
index 9e41d85..8705c41 100644
--- a/Nerd_STF/Mathematics/Geometry/Vert.cs
+++ b/Nerd_STF/Mathematics/Geometry/Vert.cs
@@ -1,8 +1,9 @@
-using System.Diagnostics.CodeAnalysis;
+using System.Collections;
+using System.Diagnostics.CodeAnalysis;
 
 namespace Nerd_STF.Mathematics.Geometry
 {
-    public struct Vert : ICloneable, IEquatable<Vert>
+    public struct Vert : ICloneable, IEquatable<Vert>, IGroup<double>
     {
         public static Vert Back => new(0, 0, -1);
         public static Vert Down => new(0, -1, 0);
@@ -73,6 +74,12 @@ namespace Nerd_STF.Mathematics.Geometry
 
         public object Clone() => new Vert(position);
 
+        IEnumerator IEnumerable.GetEnumerator() => GetEnumerator();
+        public IEnumerator<double> GetEnumerator() => position.GetEnumerator();
+
+        public double[] ToArray() => position.ToArray();
+        public List<double> ToList() => position.ToList();
+
         public static Vert operator +(Vert a, Vert b) => new(a.position + b.position);
         public static Vert operator -(Vert d) => new(-d.position);
         public static Vert operator -(Vert a, Vert b) => new(a.position - b.position);
diff --git a/Nerd_STF/bin/Release/net6.0/ref/Nerd_STF.dll b/Nerd_STF/bin/Release/net6.0/ref/Nerd_STF.dll
index 7303c53..135be99 100644
Binary files a/Nerd_STF/bin/Release/net6.0/ref/Nerd_STF.dll and b/Nerd_STF/bin/Release/net6.0/ref/Nerd_STF.dll differ