10. if you are asked to give the intersection of any plane and any line not in that
plane, your answer will always be be a
11. if you are asked to give the intersection of two non-parallel planes, your
answer will always be a
12. if you are asked to give the intersection of two lines, your answer will always
be a

10. If you are asked to give the intersection of any plane and any line not in that  plane, your answer will always be be a point

11. If you are asked to give the intersection of two non-parallel planes, your answer will always be a line

12. If you are asked to give the intersection of two lines, your answer will always  be a point

Step-by-step explanation:

10. In space, a plane and a line that is not lying on this plane or parallel to it will always meet at point.

For instance, line PN intersects plane A at point N

11. The intersection of two planes in space is a line.

For instance, the intersection of planes QRST and PQRN is line RQ.

12. Two lines that are not parallel in the same plane will always intersect at a point.

For instance, lines TQ and PQ intersects at point Q

However, if two parallel lines are identical and coincide with each other, they intersect at infinitely many points.

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