pattern folding question from CDP

[hope_to_match]

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Can someone please explain to me how to approach this: I don't understand how to visualize the little piece (square) on top...thanks..😕

 

[Illfavor]

I try to do it "referentially." So when this is folded up, the orientation of the cap will switch (I think of this as R/S enantiomers. If the white triangle is pointing NW/SE this way, it has to be SW/NE when folded). From there I determine how each side is "affected" by either the white or gray portion of the cap. Using this method it's pretty easy to see that the sides of the white half of the cap are touched by the two sides visible in C. If you can just flip/rotate the top cap in your head (along the vertical axis of the page) it is easier.

 

[virajpatel]

I had a question like this on CDP too where two of the answers see correct.

 

[hope_to_match]

I try to do it "referentially." So when this is folded up, the orientation of the cap will switch (I think of this as R/S enantiomers. If the white triangle is pointing NW/SE this way, it has to be SW/NE when folded). From there I determine how each side is "affected" by either the white or gray portion of the cap. Using this method it's pretty easy to see that the sides of the white half of the cap are touched by the two sides visible in C. If you can just flip/rotate the top cap in your head (along the vertical axis of the page) it is easier.

see...this is sort of how i am trying to do it these days and my scores have improved...but for this particular question i don't see why the 2 white sides of the cap won't touch the answer that I thought was correct..i think B would be correct if the orientation of the line was different..i am having a lot of trouble with this one

If it would run (in B) from bottom left to upper right corner and the two white sides would touch the other sides as we see them, then B would be correct, right?

 

[Illfavor]

When you flip the cap, the gray section it touches has the white strip on the right side. B does not have this. Look at the picture, the "point" of the white triangle, when folded, would touch the top right of the white stripe of a gray section. This one fact alone makes C the only possible answer.