<p>Which of the following figures in a plane separates it into half-planes?</p>
<p>a line
a ray
an angle
a point
aline segment</p>
<p>***, why would you be taking the test again? and it would be a line. A line is the only thing in that list that would be able to travel without limits (like a plane) so that it never ends and endlessly cuts the plain in half</p>