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?

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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

ganeshie8 · Answer

keyboard is one plane, and screen is another plane

ganeshie8 · Answer

so two planes intersect in exactly how many lines?  have a look at ur laptop and see :)

anonymous · Answer

1

ganeshie8 · Answer

thats right ! two planes intersect in exactly one line - if they intersect