it is not obtuse if the angles measure is 20.
is that what you were looking for?
Answer:
d) a wall that was built as a boundary but is no longer considered a boundary
Explanation:
Take the Berlin Wall for example, it is a relic boundary because it no longer splits Germany into East and West Germany.
The definition for a relic boundary is a boundary that no longer exists as a boundary just a cultural landscape.
What may form in a large body of water such as a lake or ocean, is a delta
