The question is not well addresses. Do you mean International borders? Hawaii has no borders with in any other state or international. the other 49 all have borders with any other state. So I think one doesn't have borders?
Colorado and Wyoming are the two US states with borders made up of 4 straight lines.
With borders.
There are 50 states in the United States.
Mexico borders to the south of the United States.
Alaska and Hawaii don't border any other states.
Which two states have four straight lines as borders
Canada borders the United States to the north.
Tennessee borders 8 states (as does Missouri), the most of any.
Alaska and Hawaii share no borders with US States.
Minnesota, Montana and South Dakota are the three US states which border North Dakota.
Canada
Wisconsin.