What do the dotted lines exactly mean???

[predentlove]

---

Members do not see this ad.

I always thought the dotted lines meant that that there was a 'hole' of some sort behind it. 😕

Can someone explain why the dotted line in the front view exists?

Credits to kaplan


Why are there dotted lines there?

Thanks always <3

 

[herkulease]

a dotted line tells you that there is an edge/outline of something that is hidden from view.

it could be for example a hole in the middle a box from the front view. You would of course see 2 dotted lines to show the outline of the hole.

but those two dotted lines could also mean that there is a smaller box behind the large front.

what it is or can be can be determined by the other views given.

 

[AlbinoPolarBear]

Oh boy... you might have trouble with TFE...

 

[Jackson-Ave-Dental]

Basically a line that you can't see... but it could mean other things too. You just have to do a couple of them and you'll begin to understand.

 

[predentlove]

Wow thanks for the visual!

I just need to remember the pattern of these.. and I'll be good..

 

[predentlove]

Answer would be A? right?

 

[ugination87]

yes

 

[herkulease]

where did you get that problem from?

C is as valid choice. I could nitpick an area but I'm not sure if its a poor scan or not.

 

[Troyvdg]

where did you get that problem from?

C is as valid choice. I could nitpick an area but I'm not sure if its a poor scan or not.

C can't be a choice based on the top view. C shows that there is a ledge or indent in front

 

[AlbinoPolarBear]

C can't be a choice based on the top view. C shows that there is a ledge or indent in front

+1. Answer is A.

 

[herkulease]

C can't be a choice based on the top view. C shows that there is a ledge or indent in front

seeing the outline does not suggest it has to be a ledge or indent. it easily could be a box on top that covers the entire depth of the bottom object, but not its width.

I don't have any graphics tablet to draw so I have to use objects from word. that's what I intended to do. I literally put two things on top of one another. kinda of like the T shape from tetris. the top and bottom boxes both have the same depth.

picture top and end views for it. I don't remember any rules or assumptions that you could not see a distinction between two objects edges like I have it situated.

 

[LetsGo2DSchool]

C can't be a choice based on the top view. C shows that there is a ledge or indent in front

seeing the outline does not suggest it has to be a ledge or indent. it easily could be a box on top that covers the entire depth of the bottom object, but not its width.

I don't have any graphics tablet to draw so I have to use objects from word. that's what I intended to do. I literally put two things on top of one another. kinda of like the T shape from tetris. the top and bottom boxes both have the same depth.

picture top and end views for it. I don't remember any rules or assumptions that you could not see a distinction between two objects edges like I have it situated.

Which is true for PAT?

 

[PooyaH]

If the answer was C, then you should see a solid horizontal line on the top view, but there isn't one. It's A!

 

[predentlove]

For the missing side,

are we predicting what it CAN POSSIBLY BE?

but we don't know for sure unless we can see the 3d version?

because technically for some of them, you wouldn't be able to "guess" the third side... right?

am i correct in thinking this?

 

[AlbinoPolarBear]

seeing the outline does not suggest it has to be a ledge or indent. it easily could be a box on top that covers the entire depth of the bottom object, but not its width.

I don't have any graphics tablet to draw so I have to use objects from word. that's what I intended to do. I literally put two things on top of one another. kinda of like the T shape from tetris. the top and bottom boxes both have the same depth.

picture top and end views for it. I don't remember any rules or assumptions that you could not see a distinction between two objects edges like I have it situated.

Lol what are you talking about? If they have the same depth, there wouldn't be a line to separate them. A line separating them means that there is a change of depth.

PAT is already confusing as hell and when you put more tricks into it, people's heads will explode.

Boxes stacking up? are you freakin kidding me? So from your reasoning, from this top view, both of the front views are valid, as the second front view is just "9 boxes stacking perfectly on top of each other". Doesn't it sound ridiculous?

 

[herkulease]

I'm not trying to confuse people rather I'm saying they should not just assume a solid automatically means a depth change. Its possible to be a separate object that is right @ the edge.

As I mentioned before I do not remember any assumptions that it is implied that a solid line that does not make up the keyhole if you will of the object always means a depth change.

You'll have to excuse my not so perfect drawings.

here are top and end views of an object.

Can you say for sure that it the front view is the upper left or lower right and can't be the other.

here are the intended objects. upper left object is suppose to be 2 separate pieces like before both same depth but different widths. while lower right is 1 piece that was made from a mold.

CDP has an example very similar idea to this. #26, test 3. the trapezoid/pyramid piece is not molded as part of the larger structure. but rather a separate piece. Its base is placed right up to the edge and from the end view you can see they make a clear distinction trapezoid/pyramid piece and what its sitting on. the solid line goes completely across. It does not start from the left, break to form the outline the trapezoid/pyramid thing as if it was part of base then ends on the right edge.

I have an old kaplan book that also shows too. two separate objects rather than 1 mold but I'm not sure if they reshuffle things or not. So I can't tell you what number to look up.

 

[jonishere5]

I put this figure into my 3-D graphics program. Here's what it came up with.

And here is the image with a block I put on top of the figure

As you can see you can't tell the difference between the two. This ambiguous problem however would probably not show up on the real DAT hopefully...

 

[herkulease]

I put this figure into my 3-D graphics program. Here's what it came up with.

And here is the image with a block I put on top of the figure

As you can see you can't tell the difference between the two. This ambiguous problem however would probably not show up on the real DAT hopefully...

thank you. this is example what I trying point out but I don't have a fancy program like you. what is the name of it by the way?

I honestly don't think it will show up. I think somewhere in the beginning the ADA says the question(that comes from the sample ada test) have been retired.

It must've suck for those who did have to it though.

 

[jonishere5]

heres a perspective view of the object as well!

 

[jonishere5]

thank you. this is example what I trying point out but I don't have a fancy program like you. what is the name of it by the way?

I honestly don't think it will show up. I think somewhere in the beginning the ADA says the question(that comes from the sample ada test) have been retired.

It must've suck for those who did have to it though.

Hey I'm Jon, wow yeah that does suck they must have been slacking a bit when writing the test 🙂 clearly A & C would work.

 

[toothhornet88]

Hey I'm Jon, wow yeah that does suck they must have been slacking a bit when writing the test 🙂 clearly A & C would work.

The thing that you guys are missing is that based on the DAT PAT rules, if there is a line like in choice C there has to be an EDGE or INDENT coming of some sort. Just like AlbinoPolar Bear stated you cannot assume that there are things stacked on top of each other. If there is a line like that then IT HAS to been that something is either indenting or coming out!

 

[Troyvdg]

The thing that you guys are missing is that based on the DAT PAT rules, if there is a line like in choice C there has to be an EDGE or INDENT coming of some sort. Just like AlbinoPolar Bear stated you cannot assume that there are things stacked on top of each other. If there is a line like that then IT HAS to been that something is either indenting or coming out!

👍

Hey I'm Jon, wow yeah that does suck they must have been slacking a bit when writing the test 🙂 clearly A & C would work.

👎

 

[herkulease]

The thing that you guys are missing is that based on the DAT PAT rules, if there is a line like in choice C there has to be an EDGE or INDENT coming of some sort. Just like AlbinoPolar Bear stated you cannot assume that there are things stacked on top of each other. If there is a line like that then IT HAS to been that something is either indenting or coming out!

Problem though is there are no rules/assumptions that is stated for TFE like there is for key holes or cube counting.

such hidden cubes, unseen side has no irregularities etc.

 

[jonishere5]

This is from the TFE Tutorial on the ADA Website:

PART 2 (For questions 16 through 30) The pictures that follow are top, front and end views of various solid objects. The views are without perspective. That is, the points in the viewed surface are viewed along parallel lines of vision. The projection looking DOWN on it is shown in the upper left-hand corner (TOP VIEW). The projection looking at the object from the FRONT is shown in the lower left-hand corner (FRONT VIEW). The projection looking at the object from the END is shown in the lower right-hand corner (END VIEW). These views are ALWAYS in the same positions and are labeled accordingly. Note that lines that cannot be seen on the surface in some particular view are DOTTED in that view. In the problems that follow, two views will be shown, with four alternatives to complete the set. You are to select the correct view using the mouse. Click Next for a sample question.

It does not explicitly you can't assume things are stacked upon each other, but I think it should.