diff --git a/THREE/Math/Matrix3.cs b/THREE/Math/Matrix3.cs
new file mode 100644
index 00000000..c3f12777
--- /dev/null
+++ b/THREE/Math/Matrix3.cs
@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace THREE.Math
+{
+    class Matrix3
+    {
+    }
+}
diff --git a/THREE/Math/Matrix4.cs b/THREE/Math/Matrix4.cs
new file mode 100644
index 00000000..452af0c3
--- /dev/null
+++ b/THREE/Math/Matrix4.cs
@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace THREE.Math
+{
+    class Matrix4
+    {
+    }
+}
diff --git a/THREE/Math/Plane.cs b/THREE/Math/Plane.cs
new file mode 100644
index 00000000..90c31191
--- /dev/null
+++ b/THREE/Math/Plane.cs
@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace THREE.Math
+{
+    class Plane
+    {
+    }
+}
diff --git a/THREE/Math/Quaternion.cs b/THREE/Math/Quaternion.cs
new file mode 100644
index 00000000..a922bf0b
--- /dev/null
+++ b/THREE/Math/Quaternion.cs
@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace THREE.Math
+{
+    class Quaternion
+    {
+    }
+}
diff --git a/THREE/Math/Ray.cs b/THREE/Math/Ray.cs
new file mode 100644
index 00000000..057a7e93
--- /dev/null
+++ b/THREE/Math/Ray.cs
@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace THREE.Math
+{
+    class Ray
+    {
+    }
+}
diff --git a/THREE/Math/Sphere.cs b/THREE/Math/Sphere.cs
new file mode 100644
index 00000000..6292315a
--- /dev/null
+++ b/THREE/Math/Sphere.cs
@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace THREE.Math
+{
+    class Sphere
+    {
+    }
+}
diff --git a/THREE/Math/Spherical.cs b/THREE/Math/Spherical.cs
new file mode 100644
index 00000000..8ae253b4
--- /dev/null
+++ b/THREE/Math/Spherical.cs
@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace THREE.Math
+{
+    class Spherical
+    {
+    }
+}
diff --git a/THREE/Math/Triangle.cs b/THREE/Math/Triangle.cs
new file mode 100644
index 00000000..6b29e487
--- /dev/null
+++ b/THREE/Math/Triangle.cs
@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace THREE.Math
+{
+    class Triangle
+    {
+    }
+}
diff --git a/THREE/Math/Vector2.cs b/THREE/Math/Vector2.cs
new file mode 100644
index 00000000..14388152
--- /dev/null
+++ b/THREE/Math/Vector2.cs
@@ -0,0 +1,140 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace THREE.Math
+{
+    public class Vector2
+    {
+        public double x = 0;
+        public double y = 0;
+
+        public Vector2(double x = 0, double y = 0)
+        {
+            this.x = x;
+            this.y = y;
+        }
+
+        public double width
+        {
+            get
+            {
+                return this.x;
+            }
+            set
+            {
+                this.x = value;
+            }
+        }
+
+        public double height
+        {
+            get
+            {
+                return this.y;
+            }
+            set
+            {
+                this.y = value;
+            }
+        }
+
+        public bool isVector2 = true;
+
+        public Vector2 Set(double x, double y)
+        {
+            this.x = x;
+            this.y = y;
+            return this;
+        }
+
+        public Vector2 SetScalar(double scalar)
+        {
+            this.x = scalar;
+            this.y = scalar;
+            return this;
+        }
+
+        public Vector2 SetX(double x)
+        {
+            this.x = x;
+            return this;
+        }
+
+        public Vector2 SetY(double y)
+        {
+            this.y = y;
+            return this;
+        }
+
+        public Vector2 SetComponent(int index, double value)
+        {
+            switch (index)
+            {
+                case 0:
+                    this.x = value;
+                    break;
+                case 1:
+                    this.y = value;
+                    break;
+                default:
+                    throw new Exception($"index is out of range: {index}");
+            }
+
+            return this;
+        }
+
+        public double GetComponent(int index)
+        {
+            switch (index)
+            {
+                case 0:
+                    return this.x;
+                case 1:
+                    return this.y;
+                default:
+                    throw new Exception($"index is out of range: {index}");
+            }
+        }
+
+        public Vector2 Clone(Vector2 v)
+        {
+            this.x = v.x;
+            this.y = v.y;
+
+            return this;
+        }
+
+        public Vector2 Add(Vector2 v, Vector2 w = null)
+        {
+            if (w != null)
+            {
+                // console.warn('THREE.Vector2: .add() now only accepts one argument. Use .addVectors( a, b ) instead.');
+                return this.AddVectors(v, w);
+            }
+
+            this.x += v.x;
+            this.y += v.y;
+
+            return this;
+        }
+
+        public Vector2 AddScalar(double s)
+        {
+            this.x += s;
+            this.y += s;
+
+            return this;
+        }
+
+        public Vector2 AddVectors(Vector2 a, Vector2 b)
+        {
+            this.x = a.x + b.x;
+            this.y = a.y + b.y;
+
+            return this;
+        }
+    }
+}
diff --git a/THREE/Math/Vector3.cs b/THREE/Math/Vector3.cs
new file mode 100644
index 00000000..c6e0f4a8
--- /dev/null
+++ b/THREE/Math/Vector3.cs
@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace THREE.Math
+{
+    class Vector3
+    {
+    }
+}
diff --git a/THREE/Math/Vector4.cs b/THREE/Math/Vector4.cs
new file mode 100644
index 00000000..a00299b1
--- /dev/null
+++ b/THREE/Math/Vector4.cs
@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace THREE.Math
+{
+    class Vector4
+    {
+    }
+}
diff --git a/THREE/THREE.csproj b/THREE/THREE.csproj
index 0636ae63..d2d09bcf 100644
--- a/THREE/THREE.csproj
+++ b/THREE/THREE.csproj
@@ -49,6 +49,17 @@
     <Compile Include="Math\Interpolant.cs" />
     <Compile Include="Math\Line3.cs" />
     <Compile Include="Math\Math.cs" />
+    <Compile Include="Math\Matrix3.cs" />
+    <Compile Include="Math\Matrix4.cs" />
+    <Compile Include="Math\Plane.cs" />
+    <Compile Include="Math\Quaternion.cs" />
+    <Compile Include="Math\Ray.cs" />
+    <Compile Include="Math\Sphere.cs" />
+    <Compile Include="Math\Spherical.cs" />
+    <Compile Include="Math\Triangle.cs" />
+    <Compile Include="Math\Vector2.cs" />
+    <Compile Include="Math\Vector3.cs" />
+    <Compile Include="Math\Vector4.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />