The best statement that could be used describe a polygon is that it is a closed plane figure with three or more sides that are straight. Thus, the correct answer is A: a closed plane figure with three or more sides that are straight.
Hope this helps! :)
Answer:
x should equal 39 because 102+39=141 so subtract that from 180 like so. 180-141 which equal 39 the answer.
The correct place for it in the .04