Question

Brenda observes that the keyboard and the screen of an open laptop lie on two different planes. In how many lines do the planes containing the keyboard and the screen intersect?

0

2

1

3

Answer 1

help

Answer 2

Two planes can:

1) never intersect when parallel,
2) intersect across infinite lines when coplanar, and
3) intersect on one line otherwise.

You gave an example of number 3. so ur looking 4 the third choice..

Answer 3

hope that helps!;)

Answer 4

thanks

Answer 5

no problem:)

Answer 6

so the answer is 2

Answer 7

;)

Answer 8

so the answer is 2?

Answer 9

lol! yes:)

Answer 10

ok thank u

Answer 11

np!