八年级数学上册第十二章全等三角形12.2三角形全等的判定第3课时三角形全等的判定(ASA,AAS)同步训练(新版)新人教版.doc

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八年级数学上册第十二章全等三角形12.2三角形全等的判定第3课时三角形全等的判定(ASA,AAS)同步训练(新版)新人教版.doc_第1页
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1、1第 3课时 三角形全等的判定(ASA,AAS)学生用书 P2912016金华如图 12-2-30,已知 ABC BAD,添 加下列条件还不能判定ABC BAD的是( )图 12-2-30A AC BD B CAB DBAC C D D BC AD2如图 12-2-31,点 D, E分别在线段 AB, AC上, AE AD,不添加新的线段和字 母,要使 ABE ACD,需添加的一个条件是_ _(只写一个条件即可)图 12-2-3132015福州如图 12-2-32,12 ,34,求证: AC AD.图 12-2-32242015 春张掖月考如图 12-2-33,已知 AOD COB, A C,

2、 O是 AC的 中点图 12-2-33求 证: AOB COD.52016孝感如图 12-2-34, BD AC于点 D, CE AB于点 E, AD AE.求证:BE CD.3图 12-2-346两块完全相同的三角形纸板 ABC和 DEF,按如图 12-2-35所示的方式叠放,阴影部分为重叠部分,点 O为边 AC和 DF的交点不重叠的两部分 AOF与 DOC是否全等?为什么?图 12-2-354参考答案【知识管理】2夹边3对边【归类探究】例 1 略 例 2 (1)略 (2) D75【当堂测评】1D 2.B 3.D 4.B【分层作业】1A 2. ADC AEB或 CEB BDC或 C B或 AB AC或 BD CE3略 4.略 5.略6 AOF与 DOC全等理由略

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