diff --git a/DrawFigureLibrary/Figures/CircleFigure.cs b/DrawFigureLibrary/Figures/CircleFigure.cs
new file mode 100644
index 0000000..c31ef89
--- /dev/null
+++ b/DrawFigureLibrary/Figures/CircleFigure.cs
@@ -0,0 +1,15 @@
+namespace DrawFigureLibrary.Figures
+{
+    public class CircleFigure : EllipseFigure
+    {
+        public CircleFigure(string name, int x, int y, int diameter) : base(name, x, y, diameter, diameter) { }
+
+        public void ChangeRadius(int newRadius)
+        {
+            if (newRadius <= 0) throw new ArgumentException("Радиус должен быть > 0");
+            int d = newRadius * 2;
+            w = d;
+            h = d;
+        }
+    }
+}