Parallelogram
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- goyalsau
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Pretty much confused,
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Saurabh Goyal
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- goyalsau
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This is solution that they have given, I just don't understand it,
it has to be 240
it has to be 240
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- shovan85
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No man!! 96 is correct. we are comparing the wrong sides. We could know that both are similar but different angles are compared.goyalsau wrote:This is solution that they have given, I just don't understand it,
it has to be 240
See the ratios and check the angles with respect to that you can get it.
If the problem is Easy Respect it, if the problem is tough Attack it
- shovan85
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Thats Angle STUsixpointer wrote:can u explain the sign DSTU ?
Please provide that PNC solution there ... I have gone Crazy
5 days to go
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- fskilnik@GMATH
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Hi there,
I have to teach in some minutes, so I will give the "key", if needed anything else to understand, please write and when I finish I come back.
Regards,
Fabio.
From the similarity of triangles (angle S common, the other is the given in the question stem...) we get:
x over (4x) = 4x - (x+20) over 2x
For me x is the length of PT (and ST) ... please have a look and I hope you understand.
The answer is x = 8 then 12x equals 96!!
Hint in general for similarity: look angles opposing sides, then you will know which side must be proportional to which side... I hope you got it. I must teach now!
I have to teach in some minutes, so I will give the "key", if needed anything else to understand, please write and when I finish I come back.
Regards,
Fabio.
From the similarity of triangles (angle S common, the other is the given in the question stem...) we get:
x over (4x) = 4x - (x+20) over 2x
For me x is the length of PT (and ST) ... please have a look and I hope you understand.
The answer is x = 8 then 12x equals 96!!
Hint in general for similarity: look angles opposing sides, then you will know which side must be proportional to which side... I hope you got it. I must teach now!
Fabio Skilnik :: GMATH method creator ( Math for the GMAT)
English-speakers :: https://www.gmath.net
Portuguese-speakers :: https://www.gmath.com.br
English-speakers :: https://www.gmath.net
Portuguese-speakers :: https://www.gmath.com.br
- goyalsau
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I think i got it now,fskilnik wrote:Hi there,
I have to teach in some minutes, so I will give the "key", if needed anything else to understand, please write and when I finish I come back.
Regards,
Fabio.
From the similarity of triangles (angle S common, the other is the given in the question stem...) we get:
x over (4x) = 4x - (x+20) over 2x
For me x is the length of PT (and ST) ... please have a look and I hope you understand.
The answer is x = 8 then 12x equals 96!!
Hint in general for similarity: look angles opposing sides, then you will know which side must be proportional to which side... I hope you got it. I must teach now!
One more thing i like Now i know for similar two angles must be same,
is there any other property of similar triangles
Saurabh Goyal
[email protected]
-------------------------
EveryBody Wants to Win But Nobody wants to prepare for Win.
[email protected]
-------------------------
EveryBody Wants to Win But Nobody wants to prepare for Win.
- fskilnik@GMATH
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I´m glad that I helped... as far as another similarity properties are concerned... I guess I detailed all (GMAT-related) important facts about it in an online GMATH material of mine called "Express Class #4"... so that I invite you to go there, register and meet my online course! (Sorry for the advertising... but it´s the best material I know on this matter, if you allow me not be humble...)goyalsau wrote: I think i got it now,
One more thing i like Now i know for similar two angles must be same,
is there any other property of similar triangles
Fabio Skilnik :: GMATH method creator ( Math for the GMAT)
English-speakers :: https://www.gmath.net
Portuguese-speakers :: https://www.gmath.com.br
English-speakers :: https://www.gmath.net
Portuguese-speakers :: https://www.gmath.com.br