public VTriangle(double width, double height, VColor fill, VColor stroke) : base(width, height, fill, stroke) { }
public VTriangle(double width, double height, VColor fill, VColor stroke, int strokeThickness) : base(width, height, fill, stroke, strokeThickness) { }
public VEllipse(double width, double height, VColor fill, VColor stroke) : base(width, height, fill, stroke) { }