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April 18, 2015

Posted by **Robin** on Tuesday, January 12, 2010 at 11:47pm.

- math -
**drwls**, Tuesday, January 12, 2010 at 11:57pmFirst angle = A

second angle = B

Third angle = 3

A + B + C = 180

B = 2A

C = B - 20

B/2 + B + (B-20) = 180

5/2 B = 200

B = (2/5)*200 = 80

You finish it.

- math -
**timmy**, Tuesday, January 12, 2010 at 11:58pm40 degrees 60 degrees and 80 degrees

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