PAT Questions

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egan

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I just began studying for PAT and I feel like there's some rule for keyhole that I am missing or just don't know. Here is my question:

Screenshot2011-07-17at115526PM.png


Answer is B, but I don't see what's wrong with E. Proportions maybe? Iono..


Screenshot2011-07-17at115458PM.png


Wouldn't A and B be the same? I might be missing something stupid but I can't for the life of me figure out the difference:scared: Answer is B btw.
 
the2ndone , you can seethat one of theledge in B is higher than the other.. which is what the original figure shows.
 
B on the first one is missing the hole. I think the rule of thumb is the keyhole matches exactly one side of the figure. Thus, if there are holes in the shape that would fit through regardless because the overall shape is right, it's not one of the "faces" of the shape.

For A on the second one, the slant isn't flush because the top slant juts out a bit extra.
 
B on the first one is missing the hole. I think the rule of thumb is the keyhole matches exactly one side of the figure. Thus, if there are holes in the shape that would fit through regardless because the overall shape is right, it's not one of the "faces" of the shape.

For A on the second one, the slant isn't flush because the top slant juts out a bit extra.

Ahhh that's exactly what I was missing. Can anyone confirm this? That the keyhole must match exactly one side of the figure? It makes sense to me.
 
This is how I understand it also, even if it could potentially fit through, there has to be an exact "shadow" as if a light was shone against it from one side and the shadow was the keyhole, so those holes and shapes must mach exactly.
 
the nice part about keyhole is if you can picture the shape there are only 3 possible answers. (top, bottom), (front, back), (left, right) rotated but still only 3 options for any shape they give you.

my advice while practicing try to imagine the 3 possible shapes in your head before looking at the choices. this will build a stronger conceptualization skill base then just being able to associate the image with choices.
 
the2ndone , you can seethat one of theledge in B is higher than the other.. which is what the original figure shows.

How can you tell that one ledge is higher than the other in the figure? It seems pretty difficult to determine as we're looking at both edges at an angle, what gives it away?
 
I'd say ledges are typically given away by proportions of other features of the structure. One that sticks out in my mind is when they have multiple little steps, and you can use these steps to approximate a ledge i.e. the structure's ledge matches up to two steps but an answer maybe have three or two. Hope that helps.
 
Blown up for you. I also fell into the same trap.
 
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use the explanations from CDP to see your mistakes they help a lot and teach you to focus on the object properly. this one did not need to be blown up if you carefully examined the difference in either the object itself and then compared it to A and B or if you compared every angle of A and B side by side, there are always minute differences so be careful.
 
egan, in regard to your first post for #6, B is correct cuz you are looking from the left angle. E is not cuz there will be a hole as you are looking straight from the screen.

#1, definitely a typo. A and B is correct
 
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