static void Main(string[] args)
{
//Side side1 = new Side(new Point(1, 1), new Point(6, 7));
//Side side2 = new Side(new Point(6, 7), new Point(10, 20));
//Console.WriteLine($"{side1.ComputeAngleTo(side2)}");
//Rhombus rhombus = new Rhombus(new Point(1, 1), new Point(3, 4), new Point(6, 7), new Point(10, 20));
//Rhombus rhombus = new Rhombus(new Point(0, 0), new Point(-3, -12), new Point(0, -24), new Point(3, -12));
//Rhombus rhombus = new Rhombus(new Point(0, 0), new Point(-3, -12), new Point(0, -25), new Point(3, -12));
Rhombus rhombus = new Rhombus(new Point(1, 1), new Point(1, 4), new Point(4, 4), new Point(4, 1));
Console.WriteLine($"{rhombus.IsValid()}");
}