The diagram shows a cube.
\(ABCD\) and \(EFGH\) are the horizontal plane.
What is the vertical planes of the cube?
State the normal to the plane \(PQRS.\)
The diagram shows a right prism with the rectangle base \(ABCD. \)
\(M \) and \( N\) are the midpoint of \(AB\) and \(CD\) respectively.
Given \(FG = EH = DN = NC = AM = MB.\)
State the normal of the plane \(ADEF.\)
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