Name three places two planes could intersect

If two planes intersect, they intersect in a line. Two planes that do not intersect are called parallel. Given a plane and a line, there are three possibilities. The line and the plane intersect in a single point.

the 8 in 8,420 is in the thousands place so it's value is 8 thousand.

the 8 in 6,870 is in the hundreds place so it's value is 8 hundred.

divide 8000 by 800 to find the answer:

8000 / 800 = 10

the 8 in 8,420 is 10 times greater than the 8 in 6,870