public static void add()
{
double[] coords = Services.get_coords();
Services.Type type = Services.define_type(coords);
if (type == Services.Type.Undefinded)
{
Console.WriteLine("It's not a square or rectangle, try again..");
return;
}
Quadrangle obj = new Quadrangle(type, coords);
quadrangles.Add(obj);
Console.WriteLine("Successfuly added new element:");
obj.view();
}