I knew that -- that's why I said, "You forget..." '-)
FWIW, if you look at Texas' northeastern border, you will see that it is a due N-S line between the point where the 32nd parallel intersects the Sabine River and the Red River to the north. About halfway up, at the 33rd parallel, that line is joined on the east by the joint AR/LA border, at a point called (what else) "Three States".
My place is 4.5 miles SW of that point.
I would need a map, a compass, a ruler and help to figure it out. lol.
That reminds me of a joke a Texan friend of mine tells--
What's the difference between a Texan and a jackass?
The Sabine River.