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

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Intern
Joined: 08 Jun 2009
Posts: 33
In the figure shown below, point O is the center of the [#permalink]

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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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VP
Joined: 05 Jul 2008
Posts: 1401
Re: geometry DS [#permalink]

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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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