Inheritance: GeometryClassLibrary.Polygon
 public void Polygon_AreaOfConcavePentagon()
 {
     Polygon concavePentagon = new ConcavePentagon();
     Area area = concavePentagon.Area;
     Area expected = new Area(new SquareInch(), 3);
     (area == expected).Should().BeTrue();
 }
        public void Polygon_IsConvex_ConcavePentagon()
        {
            Polygon concavePentagon = new ConcavePentagon();

            concavePentagon.IsConvex.Should().BeFalse();
        }