The US state that does not have a straight line in any part of its border is Hawaii.
Hawaii
== ==
The US has border lines WITH (not IN ) Canada.
The border between Canada and the US is not straight for several reasons; The border generally follows a line set by lines of longitude (which strictly speaking is not a straight line to start with as the curviture of the earth must also be considered. ) The Great Lakes were also taken into account as well as established settlements.
Which two states have four straight lines as borders
No US States have a border with the country of France.
The US state of South Dakota is the southern border of North Dakota.
Hawaii
Honduras does not border any US state.
Hawaii is the only state out of the 50 US states that does not share a border with any other state.
The border between Mexico and Texas is the Rio Grande River, also known as the Rio Bravo. The border between Arizona and the Mexican state of Baja California is the Colorado River (Rio Colorado), which also flows through the Grand Canyon and the Hoover Dam. The rest of the border between the United States of America and Mexico is made up of arbitrary straight lines, not corresponding to any natural feature.