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The triangle looks like this:  BD being the height establishes that B must be across from the hypotenuse. This means AB and BA are the legs of the triangle.
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I think point D is given only to make the question li'l tricky. But, the statement 2 directly gives the answer. So, answer is B.
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thanks vitar, thanks moss
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Good question. At first I drew an isosceles right triangle with height BD. Almost went with answer D. Then when I read (2) I thought wait could there be two different length sides? I have found on the GMAT some times thinking creatively can be bad. For example, if you draw the picture you see 3 triangles: ABC ABD BDC However, the question only mentions one triangle ABC. You must limit yourself to this limited concept. Similar to which is the assumption questions on Critical Reasoning, about a subject that you know well. If you draw a diagram try thinking about this in two different colors, or draw using 2 different line types. For example, Attachment: 
onetriangle.JPG [ 5.31 KiB | Viewed 970 times ]
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Dear TallJTinChina,
if you are referring to the picture with 3 triangles please read explanation first.
there is stated that only FIRST option is possible in accordance to the q-n.
Regards,
VT
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If distinct points A , B , C , and D form a right triangle [#permalink]
 30 Aug 2010, 11:10
Why is S1 insufficient? As given in the question, ABC is a right triangle with a height BD, which means B is the right angle and AC is the hypotenuse. Then AB has to be equal to BC and if AB = 6 then BC = 6 too and gives the product of AB and BC.
If distinct points A , B , C , and D form a right triangle ABC with a height BD, what is the value of AB times BC?
1. AB = 6
2. The product of the non-hypotenuse sides is equal to 24.
Statement (1) ALONE is sufficient, but Statement (2) ALONE is not sufficient
Statement (2) ALONE is sufficient, but Statement (1) ALONE is not sufficient
BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient
EACH statement ALONE is sufficient
Statements (1) and (2) TOGETHER are NOT sufficient
Explanation:
Statement (1) by itself is insufficient. is unknown.
Statement (2) by itself is sufficient. is the hypotenuse. We know that is the right angle because height can be drawn only from the right angle vertex. The four points are distinct and, consequently, can't be congruent with any of the legs. Now that we know what angle is the right angle, the product is of and (non-hypotenuse sides) is given in S2
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Re: If distinct points A , B , C , and D form a right triangle [#permalink]
30 Aug 2010, 11:49
if AB = 6 then BC = 6This is not right. I have attached a diagram to show how it is possible to have BC (equal or not equal to AB).
Attachments
photo (1).jpg [ 107.6 KiB | Viewed 1261 times ]
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Does the height "BD" specifically mean BD has to be within the triangle? Could BD just "happen" to be the same length as the height of the right triangle? For example, if the height of ABC was 4 units, could you not draw D 4 units away from B, in effect saying BD = the height, but it just isn't specifically diagramming it?
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ans will be B only..as we have to find ab*bc..which is given in 2 stmt..
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If distinct points A, B, C , and D form a right triangle ABC with a height BD , what is the value of AB times BC ?
1) AB=6
2) The product of the non-hypotenuse sides is equal to 24
from 1. It is very clear that, i can not determine the the value of AB times BC ?
So 1 not suffi...
from II)
the product of non-hypotenuse sides is equal to 24 ...
from this , How can i say.. the value of AB is {N times } of BC..
i believe we can not get the value of AB TIMES of BC.
Please give me clear explanation if some one knows.
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a-insuffecient
b-it's mentioned that abc is right triangle and bd is perpendicular.that means bd can be base or on height.the product of non hypo is given so its difficult to get the result.
taking both the statements we can get the result
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Have we missed a figure or something to post? Because there may be many interpretations without a figure right? Cheers!
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sounds like B From 1), AD can be = DC but not necessarily true in all cases. So, cannot find BC.
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i didn't get this question.... 
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OA is B. DB is the height, so point D is the same as C, and therefore AB and BD(BC) are the cathetus.
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Great question. Thanks for the explanation.
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Re: If distinct points A , B , C , and D form a right triangle [#permalink]
01 Apr 2011, 11:31
this question is rly unclear to me... is it possible they give the whole answer in statement 2?! is it GMAT style? am i missing something?
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Re: If distinct points A , B , C , and D form a right triangle [#permalink]
01 Apr 2011, 20:46
I think that the answer should be C. Am I right ? seekmba wrote: Why is S1 insufficient? As given in the question, ABC is a right triangle with a height BD, which means B is the right angle and AC is the hypotenuse. Then AB has to be equal to BC and if AB = 6 then BC = 6 too and gives the product of AB and BC.
If distinct points A , B , C , and D form a right triangle ABC with a height BD, what is the value of AB times BC?
1. AB = 6
2. The product of the non-hypotenuse sides is equal to 24.
Statement (1) ALONE is sufficient, but Statement (2) ALONE is not sufficient
Statement (2) ALONE is sufficient, but Statement (1) ALONE is not sufficient
BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient
EACH statement ALONE is sufficient
Statements (1) and (2) TOGETHER are NOT sufficient
Explanation:
Statement (1) by itself is insufficient. is unknown.
Statement (2) by itself is sufficient. is the hypotenuse. We know that is the right angle because height can be drawn only from the right angle vertex. The four points are distinct and, consequently, can't be congruent with any of the legs. Now that we know what angle is the right angle, the product is of and (non-hypotenuse sides) is given in S2
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Re: If distinct points A , B , C , and D form a right triangle [#permalink]
01 Apr 2011, 23:16
pesfunk wrote: I think that the answer should be C. Am I right ?
Published OA is correct i.e. "B" Why do you think it's C? Please explain.
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Re: If distinct points A , B , C , and D form a right triangle [#permalink]
01 Apr 2011, 23:55
Hello pesfunk knowing the geometry of rt angled triang is different from knowing the area. The Ds question is more simply- do you know the area of the rt angled trig ABC? S1 is insuff S2 is suff. If you paraphrase it tells you the 1/2 of base *height is known. Hence area is known Unless you confuse the question with what is the geometry of the triangle - you are good . C is overanalysis. Posted from my mobile device 
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Re: If distinct points A , B , C , and D form a right triangle
[#permalink]
01 Apr 2011, 23:55
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