Name the intersection of plane qmw and plane rmw a. qm b. rw c. mw d. the planes need not intersect

The answer is "C", "MW".

In the given problem, the place QMW and plane RMW. These planes intersect at MW, in which intersection is either a point, line or curve that an entity or entities both possess or is in contact with  but if we see in Euclidean geometry, the intersection of two planes is called a “line”. In the plane we can understand that the common line for both plane QMW and plane RMW is MW.

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I’m not sure what it is i sorry : ((