【单选题】如图,尺规作图作∠AOB的平分线的方法如下:以O为圆心,任意长为半径画弧交OA、OB于点C、D,再分别以点C、D为圆心,大于0.5CD的长为半径画弧,两弧交于点P,作射线OP.由作法得△OCP≌△ODP从而得两角相等的根据是( )
【简答题】听下面一段材料,完成1-3小题。 1. Bill was asked to ______. A. go to a movie with mom B. shop with mom C. visit Mr. Wang 2. Who is older, Peter or Bill? A. Peter. B. Bill. C. Not mentioned. 3. What will they do nex...
【简答题】如图,以O为圆心,任意长为半径画弧,与射线OM交于点A,再以点A为圆心,AO长为半径画弧,两弧交于点B,画出射线OB,则∠AOB=______(度)
【单选题】尺规作图作∠AOB的平分线方法如下:以O为圆心,任意长为半径画弧交OA,OB于C,D,再分别以点C,D为圆心,以大于 CD长为半径画弧,两弧交于点P,作射线OP由作法得△OCP≌△ODP的根据是 [ ]
【简答题】用括号内所给词的适当形式填空。 1. Mary happened to meet one of her old friends and invited him ____ (go) to her new house. 2. They are getting ____ (marry) next month, so they are very excited now. 3. You will feel ...
【简答题】数据模型由数据结构、数据操作和【 】三个要素组成。
【单选题】党的十八届四中全会指出,法律是治国之重器,( )是善治之前提。