public void PlaneDotTest()
{
PlaneD target = new PlaneD(2, 3, 4, 5);
Vector4D value = new Vector4D(5, 4, 3, 2);
double expected = 10 + 12 + 12 + 10;
double actual = PlaneD.Dot(target, value);
Assert.True(MathHelper.Equal(expected, actual), "PlaneD.Dot returns unexpected value.");
}