diff --git a/2020/12/Circle.cs b/2020/12/Circle.cs
new file mode 100644
index 0000000..a57c357
--- /dev/null
+++ b/2020/12/Circle.cs
@@ -0,0 +1,148 @@
+using System;
+using System.Drawing;
+
+namespace System.Drawing
+{
+    public class Circle
+    {
+
+        public Circle()
+        {
+
+        }
+
+        public Circle(int x, int y, int width, int height)
+        {
+            this.X = x;
+            this.Y = y;
+            this.Width = width;
+            this.Height = height;
+        }
+
+        public Circle(Rectangle rectangle)
+        {
+            this.X = rectangle.X;
+            this.Y = rectangle.Y;
+            this.Width = rectangle.Width;
+            this.Height = rectangle.Height;
+        }
+
+        public Circle(Point position, Size size)
+        {
+            this.X = position.X;
+            this.Y = position.Y;
+            this.Width = size.Width;
+            this.Height = size.Height;
+        }
+
+        public Circle(Size size)
+        {
+            this.X = 0;
+            this.Y = 0;
+            this.Width = size.Width;
+            this.Height = size.Height;
+        }
+
+
+        public int X { get; set; } = 0;
+
+        public int Y { get; set; } = 0;
+
+        public int Width { get; set; } = 0;
+
+        public int Height { get; set; } = 0;
+
+        public PointF Origin
+        {
+            get
+            {
+                return new PointF()
+                {
+                    X = (this.Width / 2) + this.X,
+                    Y = (this.Height / 2) + this.Y
+                };
+            }
+        }
+
+        public int MinSideLength => Math.Min(this.Width, this.Height);
+
+        public static PointF GetPointromOrigin(PointF originPosition, Size size)
+        {
+            float offsetX = (size.Width / 2);
+            float offsetY = (size.Height / 2);
+
+            PointF rs = new PointF()
+            {
+                X = originPosition.X,
+                Y = originPosition.Y
+            };
+
+            rs.X -= offsetX;
+            rs.Y -= offsetY;
+
+            return rs;
+        }
+
+        public PointF GetPoint(int deg, int distance)
+        {
+            PointF origin = this.Origin;
+            PointF rs = new PointF()
+            {
+                X = origin.X,
+                Y = origin.Y
+            };
+
+            if (deg == 0)
+            {
+                rs.Y -= distance;
+            }
+            else if (deg == 90)
+            {
+                rs.X += distance;
+            }
+            else if (deg == 180)
+            {
+                rs.Y += distance;
+            }
+            else if (deg == 270)
+            {
+                rs.X -= distance;
+            }
+            else if ((deg > 0) && (deg < 90))
+            {
+                rs.X += (float)(distance * Math.Sin(calcToRad(deg)));
+                rs.Y -= (float)(distance * Math.Cos(calcToRad(deg)));
+            }
+            else if ((deg > 90) && (deg < 180))
+            {
+                rs.X += (float)(distance * Math.Cos(calcToRad(deg - 90)));
+                rs.Y += (float)(distance * Math.Sin(calcToRad(deg - 90)));
+            }
+            else if ((deg > 180) && (deg < 270))
+            {
+                rs.X -= (float)(distance * Math.Sin(calcToRad(deg - 180)));
+                rs.Y += (float)(distance * Math.Cos(calcToRad(deg - 180)));
+            }
+            else if ((deg > 270) && (deg < 360))
+            {
+                rs.X -= (float)(distance * Math.Cos(calcToRad(deg - 270)));
+                rs.Y -= (float)(distance * Math.Sin(calcToRad(deg - 270)));
+            }
+
+            // adjust position
+            rs.X += this.X;
+            rs.Y += this.Y;
+
+            return rs;
+        }
+
+        public void Deflate(int x, int y)
+        {
+            this.Width -= x;
+            this.Height -= y;
+        }
+
+        protected double calcToRad(int deg) => ((Math.PI / 180) * deg);
+
+    }
+}
diff --git a/2020/12/circle.dia b/2020/12/circle.dia
new file mode 100644
index 0000000..f94018d
Binary files /dev/null and b/2020/12/circle.dia differ