Answer:
Option A) XY
Step-by-step explanation:
We are given the following information in the question:
Two planes ABCD and EFGH intersect each other as shown in the given figure.
We have to find the line along which the two planes intersect.
1. XY
If we join the points X and Y. Clearly, XY lies in the intersection of the two plane. Both the planes passes through the line XY. Hence, it is the line of intersection for both the planes.
2. DY
The line DY does not lie in the plane EFGH and thus cannot be the line of intersection for both the planes.
3. AX
The line AX does not lie in the plane EFGH and thus cannot be the line of intersection for both the planes.
4. AD
The line AD does not lie in the plane EFGH and thus cannot be the line of intersection for both the planes.