Making sure it uses Microsoft Code Convention

Figures/Circle.cs

@@ -4,19 +4,19 @@ namespace OOP.Figures
     {
         public Circle(double radius)
         {
-            this.radius = radius;
+            Radius = radius;
         }
 
-        public double radius { get; set; }
+        public double Radius { get; set; }
 
         public override double GetArea()
         {
-            return Math.PI * Math.Pow(radius, 2);
+            return Math.PI * Math.Pow(Radius, 2);
         }
 
         public override double GetPerimeter()
         {
-            return 2 * Math.PI * radius;
+            return 2 * Math.PI * Radius;
         }
     }
 }

Figures/Rectangle.cs

@@ -4,21 +4,21 @@ namespace OOP.Figures
     {
         public Rectangle(double width, double height)
         {
-            this.height = height;
-            this.width = width;
+            Height = height;
+            Width = width;
         }
 
-        public double height { get; set; }
-        public double width { get; set; }
+        public double Height { get; set; }
+        public double Width { get; set; }
 
         public override double GetArea()
         {
-            return height * width;
+            return Height * Width;
         }
 
         public override double GetPerimeter()
         {
-            return (height * 2) + (width * 2);
+            return (Height * 2) + (Width * 2);
         }
     }
 }