public void Line_IsPerpendicularTo()
{
Line line1 = new LineSegment(Point.Origin, new Direction(Angle.RightAngle / 2), new Distance(new Inch(), 1));
Line line2 = new LineSegment(Point.Origin, new Direction(new Angle(new Degree(), 135)), new Distance(new Inch(), 1));
Line line3 = new LineSegment(Point.MakePointWithInches(2,-3,1), new Direction(Angle.RightAngle / 2, Angle.ZeroAngle), new Distance(new Inch(), 1));
Line line4 = new LineSegment(Point.MakePointWithInches(3, 5, 7));
Line line5 = new LineSegment(Point.MakePointWithInches(1, -2, 1));
Line line6 = new LineSegment(Point.MakePointWithInches(1, 2, -3), Point.MakePointWithInches(5, 1, -4)); //4, -1, -1
line1.IsPerpendicularTo(line2).Should().BeTrue();
line1.IsPerpendicularTo(line3).Should().BeTrue();
line2.IsPerpendicularTo(line3).Should().BeTrue();
line3.IsPerpendicularTo(line1).Should().BeTrue(); //check its symmetric
line4.IsPerpendicularTo(line5).Should().BeTrue();
line4.IsPerpendicularTo(line6).Should().BeTrue();
line5.IsPerpendicularTo(line6).Should().BeFalse();
line6.IsPerpendicularTo(line4).Should().BeTrue(); //check its symmetric
line1.IsPerpendicularTo(line4).Should().BeFalse();
}
