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Mathematics 9 Online
OpenStudy (ajanijones):

∠CDF measures 143°. What is the measure of ∠CDG? http://static.k12.com/calms_media/media/1294000_1294500/1294478/1/2c9dcb21be2c94947d9e2fffccd58064838f35c8/150044.jpg A. 121° B. 47° C. 239° D. 217°

OpenStudy (pratyush5):

Look here angle CDF + angle CDG + angle GDF = 360 This is because they all are around a point. So now you can find out the value of angle CDG :)

OpenStudy (ajanijones):

I dont get it..

OpenStudy (ajanijones):

I think my answers A.

OpenStudy (anonymous):

Plug in the measure of each angle into the equation CDF+CDG+GDF=360

OpenStudy (pratyush5):

yes the answer is A :)

OpenStudy (anonymous):

:) yup

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