1. Pairs of Lines and Angles
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From the figure, we can see that NQ is a vertical line along one of the sides of the cube. Any line parallel to this line must also be vertical. We can find these lines along the remaining edges of the cube.
There are three parallel lines: RK, PM, and SL.
There are four lines that intersect NQ: KN, PQ, RQ, and MN.
Therefore, the lines that are skew to NQ are: ML, PS, RS, KL, and LS.