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如图所示，直线a∥b，∠1＝35°，∠2＝90°，则∠3的度数为（ ）
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如图所示直线l过点P－12且与以A.－2－3B.40为端点的线段恒相交求直线l的斜率范围.
如图所示直线a∥b点B.在直线b上且AB∥BC∠1=55°则∠2的度数为
55°
45°
35°
25°
如图所示将△ABC沿着DE翻折若∠1+∠2=80O则∠B=_____________.
如图直线l1∥l2被直线l3所截∠1=∠2=35°∠P=90°则∠3＝度
35
55
60
70
2015邵阳1题2分如图所示我看不见美景的原因是
光的直线传播
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如图所示直线ABCD相交于OOE平分∠AOD∠FOC=900∠1=400求∠2和∠3的度数.
2010湖北十堰如图直线l1∥l2被直线l3所截∠1=∠2=35°∠P.=90°则∠3=
已知正四棱柱ABCD—A1B1C1D1中AA1=2ABE为AA1中点如图所示则异面直线BE与CD1所
A
B
C
D
如图所示直线ABCD相交于OOE平分∠AOD∠FOC=900∠1=400求∠2和∠3的度数.
如图所示直线ABCD相交于O.OE平分∠AOD∠FOC=90°∠1=40°求∠2和∠3的度数.
某分项工程双代号网络计划如图所示其关键线路有条
2
3
4
5
如图所示直线ABCD相交于OOE平分∠AOD∠FOC=900∠1=400求∠2和∠3的度数.
已知直线l1∥l2一块含30°角的直角三角板如图所示放置∠1=25°则∠2等于
30°
35°
40°
45°
如图所示BE平分∠ABDDE平分∠BDC∠1+∠2=90°那么直线ABCD的位置关系如何
如图所示能判定直线AB∥CD的条件是
∠1=∠2
∠3=∠4
∠1+∠4=180°
∠3+∠4=90°
如图所示直线a∥b∠1=35°∠2=90°则∠3的度数为
125°
135°
145°
155°
如图所示直线a∥b∠1=130°∠2=70°求则∠3的度数.
如图所示直线a∥b点B在直线b上且AB∥BC∠1=55°则∠2的度数为
55°
45°
35°
25° 3.
如下图所示是神经元之间的连接据图回答两个神经元相接触的部位叫突触其结构如图所示该结构包括[C][D]
如图所示直线ABCD相交于O.OE平分∠AOD∠FOC=90°∠l=40°求∠2和∠3的度数.
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