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DS: Geometry

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Director
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DS: Geometry [#permalink] New post 14 Dec 2004, 07:12
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions

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Director
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 [#permalink] New post 14 Dec 2004, 07:22
i think one of the properties states that if it makes a right angled triangle then it woul dbe semi circle ..(that half of it ) which would make AC is the diameter..

answer A? not too sure though..
CIO
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 [#permalink] New post 14 Dec 2004, 09:21
agree with A. when a right triangle is inscribed in a circle, the hypotenuse is the diameter.
Director
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 [#permalink] New post 14 Dec 2004, 10:30
1) Angle of a triangle inscribed in a semicircle is 90. Here, the angle is 90, so it is a semi circle (corollary) => AC is a diameter

Ok

2) AB/BC = 3/4. Perhaps they are baiting that we might assume AB:BC:AC = 3:4:5 and therefore conclude angle ABC is 90*. But that is not the case. It does not say BC:AC is 4:5.
Can't get more information from this statement


A it is
Director
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 [#permalink] New post 14 Dec 2004, 15:01
OA is A.

Good explanation nocilis.
  [#permalink] 14 Dec 2004, 15:01
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