keyhole/TFE questions, need some help

[mgdent]

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hi, these are from the ada sample test.. bad quality so hopefully you can see them. would really appreciate any help!

KEYHOLES
10- answer D, i see how this fits the top but wouldnt the bottom have an indent?

13- answer D, is there a small hole in the middle that I am not seeing?

TFE- these ones are confusing me.. any input for these? again, really appreciate the help.

16- answer B
17- answer D
18- answer C

 

[BRM3488]

hi, these are from the ada sample test.. bad quality so hopefully you can see them. would really appreciate any help!

KEYHOLES
10- answer D, i see how this fits the top but wouldnt the bottom have an indent?

13- answer D, is there a small hole in the middle that I am not seeing?

TFE- these ones are confusing me.. any input for these? again, really appreciate the help.

16- answer B
17- answer D
18- answer C

For 10- To me it seems as though the image is of the back, since both of the squares from that angle appear to be the same size.

For 13-Maybe it is just a really poor drawing because I don't see that as the answer at all. Soo I wouldn't worry too much about that one.

Its hard to explain the TFE ones here, but the dashed lines are what you don't see from that angle (I'm sure you already knew this) so you just have to look at the answer choices and see which ones would fit with the angle they are asking. I didn't really explain well, it's more of a show not tell thing. I think there are other threads better explaining tips on this though.

Hope it sorta helped!

 

[RSD2014]

hi, these are from the ada sample test.. bad quality so hopefully you can see them. would really appreciate any help!

KEYHOLES
10- answer D, i see how this fits the top but wouldnt the bottom have an indent?

13- answer D, is there a small hole in the middle that I am not seeing?

TFE- these ones are confusing me.. any input for these? again, really appreciate the help.

16- answer B
17- answer D
18- answer C

I would stick with CRACK PAT....at least there are solutions to show you in 3D structure.

#10, you should look more carefully from the back of the FAT slanted legs it is only partially indented inward, the rest of it is flushed. So expect one of the base to be flush with the floor.

#13 bad example. And I can barely see it. You can see that the red line did not connect with the other solid lines in the middle of the structure. It is a FAILED ATTEMPT to "imply" something is miss there. But if you can't find the answer...ask yourself, "which do I know is FOR SURE NOT THE ANSWER" and cancel them out.

#17, there should be dashed lines in the middle of the structure, bad example.

#18, In front view, you see a dash line....you should automatically expect there to be a line in the middle from the Top view.

 

[chromosome21]

10. D. it's the front/back view

13. D. top/down view, and yep, there is a hole in the middle.

16. This was hard for me at first. I couldn't see if the middle lines in the front view are bold or dashed. First I thought all of the choices should show up with bold lines in the very middle of end view. But didn't understand how it's dashed. But now I figured out. Look at the front and end views. It's actually the blades, which stick out from the bottom. There is nothing, and I mean no square or round shape rode that is coming out of the base. It's all about the blades. You immediately eliminate A and D now. And for choice C, we got two pointy blades in right/left side, but that's not the case, they're blunt from the top if you look at the end view. So answer choice C can't be right. B is the only one left with the blunt blades and there is nothing in the middle that the blades are attach to. B is the answer.

17. A isn't right cause of the end view. Now B can't be right cause it needs to have the dashed line going thru the middle stripe. C can't be right cause there are all solid lines and we can see from End view, the base is hidden from the top view. So C can't be right. We are left with choice D, but it wasn't too obvious for me. I had to THINK about it a little deeper.

18. C. Front view suggests there is a hidden middle line. Answer choice B will be eliminated b/c for it to be true, there needs to be a solid line in the front view, not the dashed line. Choice A suggests there is a line going in the middle which cuts the triangle in half, now for it to be true, we would have a pointed blade as base. But our front view suggests the bottom of the triangle is flat, not pointy blade. So A is wrong. For D to be right, we need to have a pointy top, which the front view does agree with. But then, we would have a bold line in the middle of the triangle in the front view instead of dashed line. Only choice C suggests that there could be a dashed line from front view, and the line is a pointy blade going from top to bottom. And it's hidden b/c of the slanted shape that's been shown in the end view. And the slant is making the blade hidden, so we got dashed line in the front view.

 

[chromosome21]

correction for # 16: it's not the "blade" it's the solid triangular thingie with blunt end in the middle. Look at the attachment. Four of these are coming out of the base, and no rode is attached to these prisms. Hope this clears things up. Rest of the explanation can be correlated now.

 

[mgdent]

thank you so much to everyone who responded, i really appreciate it.