[TestCase(1.1, 2.2, -2.1, -4.2, false)] // Sloped Pointing Opposite Way public static void IsConvex( double magnitudeX1, double magnitudeY1, double magnitudeX2, double magnitudeY2, bool expectedResult) { LineSegment segment1 = new LineSegment(new CartesianCoordinate(0, 0), new CartesianCoordinate(magnitudeX1, magnitudeY1)); LineSegment segment2 = new LineSegment(new CartesianCoordinate(0, 0), new CartesianCoordinate(magnitudeX2, magnitudeY2)); Assert.AreEqual(expectedResult, GeometryLibrary.IsConvex(segment1, segment2, Tolerance)); }