public void FromPointsTest()
{
Point3 point1 = new Point3(0, 1, -7);
Point3 point2 = new Point3(3, 1, -9);
Point3 point3 = new Point3(0, -5, -8);
Plane actual = Plane.FromPoints(point1, point2, point3);
Vector3 expected = new Vector3(-12, 3, -18);
Assert.AreEqual(expected, actual.Normal);
}