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如图,O是线段BC的中点,A、D、C到O点的距离相等.若∠ABC=30°,则∠A...
如图,O是线段BC的中点,A、D、C到O点的距离相等.若∠ABC=30°,则∠ADC的度数是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164728334783145/SYS201310221647283347831007_ST/images0.png)
A.30°
B.60°
C.120°
D.150°
考点分析:
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