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; } } }