public void RegularPolygon_Constructor()
        {
            Polygon polygon = new RegularPolygon(4, 4 * Feet);

            polygon.IsRectangle().Should().BeTrue();
            polygon.Area.Should().Be(16 * SquareFeet);
        }
 public void RegularPolygon_Constructor()
 {
     Polygon polygon = new RegularPolygon(4, new Distance(4, Feet));
     polygon.IsRectangle().Should().BeTrue();
     polygon.Area.Should().Be(new Area(new SquareFoot(), 16));
 }