Question

Look at the planes ABCD and EFGH shown below:

The two planes intersect along which of the following lines? (5 points)

ND

MN

AM

AD

Answer 1

the answer to that is  MN

Answer 2

Answer: The two planes intersect at line MN.

Explanation:

Given that two planes named ABCD and EFGH. these two planes are intersecting each other as shown in the figure.

By looking the figure it is obvious that two planes are intersecting each other at point M and N.

Hence, the correct answer is MN.

Refer the figure attached.