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September 16, 2014

September 16, 2014

Posted by **alex** on Tuesday, January 17, 2012 at 12:27am.

- geometry -
**Steve**, Tuesday, January 17, 2012 at 2:28pmcall the base angle b, and the vertex angle v.

b+b+v = 180

170+v=180

v = 10

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