Pattern Folding Trick

[marymatthews]

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I may be wrong, but it is something that I recently discovered. Someone could back me up on this, and I will try my best to explain, but it is very difficult to explain this trick.
Is it safe to assume that mirror images of the object is automatically wrong? For example, if they give you the mirror image of a distinct side of the object as an answer choice, is it safe to assume that the choice is wrong because the mirror image of that side is not possible?

 

[hova137]

i think this is a correct assumption...usually when I see a mirror image, i end up eliminating it since it's impossible to fold the object in such a manner...I have been doing this on all CDP tests and it seems to be working so far...it would be great if someone could reaffirm this with a definitive answer..

 

[gigawatt]

Yes, this is a good way to eliminate choices and will work all of the time. If you see a face on the folded object that doesn't exist in the unfolded pattern, then you know it can't be right. Keep in mind, though, that rotations are valid but reflections are not.

 

[marymatthews]

Yeah
so are there any other tips or things youve noticed?

 

[UnimaasMED]

I may be wrong, but it is something that I recently discovered. Someone could back me up on this, and I will try my best to explain, but it is very difficult to explain this trick.
Is it safe to assume that mirror images of the object is automatically wrong? For example, if they give you the mirror image of a distinct side of the object as an answer choice, is it safe to assume that the choice is wrong because the mirror image of that side is not possible?

sounds interesting. Can you post an example by chance? Or mention a question from CDP where it can be seen easily?

 

[marymatthews]

sounds interesting. Can you post an example by chance? Or mention a question from CDP where it can be seen easily?

No I dont know how to do that. I tried Print Screen, but it does not work.

 

[UCB05]

Absolutely, it's a common pitfall. The reason for that is that the patterns are only folded into the page. Mirror images must be created by folding the shapes out of the page.

Uni, take for example a cutout of your right hand. Folded correctly you get a right hand. Fold it incorrectly (out of the page), and you get an inside-out mirrored image which now looks like a left hand. This is incorrect and should automatically be eliminated.

I like to use the visual example that since you cannot assume what the pattern on the underside is, it could very well be rainbow swirlies. Fold the shape out of the page and you have a mirror-image multicolored monstrosity. X that.

 

[nyr201]

nice find!! though it would still be best if someone could upload an example

😀

 

[silveryhair]

Can someone upload one?