Hi everyone,
Please see the attached problem. After reading the explanation Manhattan GMAT provided, I still believe I am correct. I would appreciate it if someone out there is able to provide a better explanation or maybe support my answer (D).
Thanks.
Manhattan GMAT CAT- Length of Line DE
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I think the answer should be B.Misterbuff wrote:Hi everyone,
Please see the attached problem. After reading the explanation Manhattan GMAT provided, I still believe I am correct. I would appreciate it if someone out there is able to provide a better explanation or maybe support my answer (D).
Thanks.
Statement I
insufficient because it does not tell us anything about other angles.
Statement II
We can determine that both triangles are similar triangle.
therefore DE= 7
Whats the OA?
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Hmm, I just took another look at the problem and I now agree with the answer. Thanks for the help!
@paralle_chase,parallel_chase wrote:I think the answer should be B.Misterbuff wrote:Hi everyone,
Please see the attached problem. After reading the explanation Manhattan GMAT provided, I still believe I am correct. I would appreciate it if someone out there is able to provide a better explanation or maybe support my answer (D).
Thanks.
Statement I
insufficient because it does not tell us anything about other angles.
Statement II
We can determine that both triangles are similar triangle.
therefore DE= 7
Whats the OA?
Stmt 1 does tell us about the angle A and B. Because CA and CB are the radius of the circle, that mean CA = CB = r. And in triangle, ABC, angle C = x = 60, hence, angale A and angle B is also 60 degree.
Also, by same logic, triangle ABC becomes similar to triangle BDE
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Truenitin86 wrote: @paralle_chase,
Stmt 1 does tell us about the angle A and B. Because CA and CB are the radius of the circle, that mean CA = CB = r. And in triangle, ABC, angle C = x = 60, hence, angale A and angle B is also 60 degree.
False, you cant assume that DE = BEAlso, by same logic, triangle ABC becomes similar to triangle BDE
We know that angle B is 60, but we dont know about angle D and angle E. Hence Insufficient.
Let me know if you think otherwise