(2009•湘西州)如图,l1∥l2,∠1=120°,∠2=100°,则∠3=( )![]() A.20° B.40° C.50° D.60° |
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(2009•南充)如图,AB是⊙O的直径,点C,D在⊙O上,∠BOC=110°,AD∥OC,则∠AOD=( )![]() A.70° B.60° C.50° D.40° |
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(2010•文山州)如图,AB∥CD,EF⊥AB于E,EF交CD于F,已知∠1=60°,则∠2=( )![]() A.20° B.60° C.30° D.45° |
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(2009•莱芜)如图,把一个长方形纸片沿EF折叠后,点D、C分别落在D′、C′的位置,若∠EFB=65°,则∠AED′等于( )![]() A.50° B.55° C.60° D.65° |
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(2010•东营)如图,将三角尺的直角顶点放在直尺的一边上,∠1=30°,∠2=50°,则∠3的度数等于( )![]() A.50° B.30° C.20° D.15° |
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(2009•崇左)如图,直线c截二平行直线a、b,则下列式子中一定成立的是( )![]() A.∠1=∠2 B.∠1=∠3 C.∠1=∠4 D.∠1=∠5 |
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(2013•扬州)下列图形中,由AB∥CD,能得到∠1=∠2的是( ) A. ![]() B. ![]() C. ![]() D. ![]() |
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(2013•天水)如图,直线l1∥l2,则∠α为( )![]() A.150° B.140° C.130° D.120° |
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(2009•娄底)如图,已知AC∥ED,∠C=26°,∠CBE=37°,则∠BED的度数是( )![]() A.63° B.83° C.73° D.53° |
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(2011•湛江)如图,直线AB、CD相交于点E,DF∥AB.若∠AEC=100°,则∠D等于( )![]() A.70° B.80° C.90° D.100° |
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