static void CreateShape()
{
Console.WriteLine("Create shape.");
Console.Write("1. Line\n2. Triangle\n3. Rectangle\n4. Circle\n5. Return to menu\n-> ");
var key = Console.ReadKey().KeyChar;
Console.Clear();
switch (key)
{
case '1':
ShapeController.CreateLine();
break;
case '2':
ShapeController.CreateTriangle();
break;
case '3':
ShapeController.CreateRectangle();
break;
case '4':
ShapeController.CreateCircle();
break;
case '5': return;
default: throw new MenuArgumentException();
}
Console.Clear();
}