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In the figure shown below, point O is the center of the

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In the figure shown below, point O is the center of the [#permalink] New post 18 Jun 2009, 03:12
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In the figure shown below, point O is the center of the semicircle and points B, C and D lie on the semicircle. If the length of the line segment AB is equal to the length of line segment OC, what is the degree measure of angle BAO?

(1) The degree measure of angle COD is 60
(2) The degree measure of angle BCO is 40

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Re: geometry DS [#permalink] New post 18 Jun 2009, 07:27
gmatprep-geo-61083.html

The key here is to recognize that the OC is radius and hence ABO and COB are isosceles triangles
Re: geometry DS   [#permalink] 18 Jun 2009, 07:27
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In the figure shown below, point O is the center of the

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