## TEST FOR HORIZONTAL OR VERTICAL LINE

Hello,

I have the following code to see if a selected line is horizontal or vertical but some lines that have the same StartY and EndY are still returning as angled. What am I missing? I even went so far as to restrain the line horizontal.

Code:
```Public Shared Function HorizontalVerticle(Line As Line) As Tuple(Of String, Double, Double, Double, Double) 'Determin if line is horizontal or verticle
If Line.StartPoint.Y = Line.EndPoint.Y And Line.StartPoint.X <> Line.EndPoint.X Then
'MsgBox("Horizontal, " & Line.StartPoint.Y & vbCrLf & "Horizontal, " & Line.EndPoint.Y,, "HorizontalVerticle Function")
Dim y = New Tuple(Of String, Double, Double, Double, Double)("Horizontal", Line.StartPoint.Y, Line.StartPoint.X, Line.EndPoint.Y, Line.EndPoint.X)
Return y
ElseIf Line.StartPoint.X = Line.EndPoint.X And Line.StartPoint.Y <> Line.EndPoint.Y Then
'MsgBox("Verticle, " & Line.StartPoint.Y & vbCrLf & "Verticle, " & Line.EndPoint.Y,, "HorizontalVerticle Function")
Dim y = New Tuple(Of String, Double, Double, Double, Double)("Verticle", Line.StartPoint.Y, Line.StartPoint.X, Line.EndPoint.Y, Line.EndPoint.X)
Return y
ElseIf Line.StartPoint.X <> Line.EndPoint.X And Line.StartPoint.Y <> Line.EndPoint.Y Then
'MsgBox("Line is neither horizontal or verticle, " & Line.StartPoint.Y & vbCrLf & "Verticle, " & Line.EndPoint.Y,, "HorizontalVerticle Function")
Dim y = New Tuple(Of String, Double, Double, Double, Double)("Angled", Line.StartPoint.Y, Line.StartPoint.X, Line.EndPoint.Y, Line.EndPoint.X)
Return y
End If
End Function```