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如图，直线a∥b，点B在直线b上，且AB⊥BC，∠1=55°，则∠2的度数为（ ）
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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°
已知如图直线AB与直线BC相交于点B.点D.是直线BC上一点.求作点E.使直线DE∥AB且点E.到B
已知如图直线AB与直线BC相交于点B.点D.是直线BC上一点求作点E.使直线DE∥AB且点E.到B.
如图矩形ABCD中AB＝4BC＝2E.是AB的中点直线l平行于直线EC且直线l与直线EC之间的距离为
如图已知△ABC中AB=ACD为△ABC所在平面内的一点过D作DE∥ABDF∥AC分别交直线AC直线
如图直线a∥b点B.在直线b上且AB⊥BC∠1=55°那么∠2的度数是
20°
30°
35°
50°
如图直线a∥b点B.在直线b上且AB⊥BC∠1=55°求∠2的度数.
已知如图直线AB与直线BC相交于点B.点D.是直线BC上一点求作点E.使直线DE∥AB且点E.到B.
如图直线a∥b点B.在直线b上且AB⊥BC∠1=55º则∠2的度数为
35º
45º
55º
125º
如图直线a∥b点B在直线上b上且AB⊥BC∠1=55°求∠2的度数.
如图直线a∥b点B.在直线b上且AB⊥BC∠2＝59°则∠1＝_________.
如图直线∥b点B.在直线b上且AB⊥BC∠1＝55°求∠2的度数.
已知如图直线AB与直线BC相交于点B.点D.是直线BC上一点.求作点E.使直线DE∥AB且点E.到B
如图直线a∥b点B在直线上b上且AB⊥BC∠1=55°求∠2的度数.
如图平面直角坐标系中已知直线上一点P.11C.为y轴上一点连接PC线段PC绕点P.顺时针旋转900至
如图直线a∥b点B.在直线b上且AB⊥BC∠1=55°求∠2的度数.
如图直线与x轴交于点A.10与y交于点B.0-2.1求直线AB的表达式2点C.是直线AB上的点且CA
如图直角梯形ABCD中AB∥DCAB=CD=1以BC上一点O.为圆心的圆经过A.D.两点且∠AOD=
矩形ABCD中AB=2BC=1点P是直线BD上一点且DP=DA直线AP与直线BC交于点E则CE=
如图直线∥b点B.在直线b上且AB⊥BC∠1＝55°求∠2的度数.
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以点12为圆心且经过点20的圆的方程为
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已知点Ax02和点B234且|AB|=则实数x的值是
过点A02且与直线x+y+1=0垂直的直线方程为．
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在△ABC中角ABC对应的边分别是abc已知A=60°b=1△ABC的面积为则△ABC外接圆的直径为
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