1/5单选题
难度：
1.如图，将△ABC沿BC方向平移得到△DCE，连接AD，下列条件能够判定四边形ABCD为菱形的是（ ）
| A | AB=BC |
| B | AC=BC |
| C | ∠B=60° |
| D | ∠ACB=60° |
- 提示1：
- 6aaW5YWI5qC55o2u5bmz56e755qE5oCn6LSo5b6X5Ye6QUI8aW1nIHdpZHRoPTI3IGhlaWdodD0xOSBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwL0EzLzUzL3JCQUNFMVVfVTAzQ2E0TDdBQUFBM1hOR0VBRTY1Ny5wbmciIGFsdD3mlbDlrablhazlvI8+Q0TvvIzlvpflh7rlm5vovrnlvaJBQkNE5Li65bmz6KGM5Zub6L655b2i77yM6L+b6ICM5Yip55So6I+x5b2i55qE5Yik5a6a5b6X5Ye6562U5qGI77yO
正确答案：QQ==
6Kej77ya4oi15bCG4pazQUJD5rK/QkPmlrnlkJHlubPnp7vlvpfliLDilrNEQ0XvvIw8YnI+4oi0QUI8aW1nIHdpZHRoPTI3IGhlaWdodD0xOSBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwL0EzLzUzL3JCQUNFMVVfVTAzQ2E0TDdBQUFBM1hOR0VBRTY1Ny5wbmciIGFsdD3mlbDlrablhazlvI8+Q0TvvIw8YnI+4oi05Zub6L655b2iQUJDROS4uuW5s+ihjOWbm+i+ueW9ou+8jDxicj7lvZNBQj1CQ+aXtu+8jDxicj7lubPooYzlm5vovrnlvaJBQkNE5piv6I+x5b2i77yOPGJyPuaVhemAie+8mkHvvI4=
2/5单选题
难度：
2.顺次连接四边形ABCD各边中点，得到四边形EFGH，要使四边形EFGH是菱形，应添加的条件是（ ）
| A | AD∥BC |
| B | AC=BD |
| C | AC⊥BD |
| D | AD=AB |
- 提示1：
- 6I+x5b2i55qE5Yik5Yir5pa55rOV5piv6K+05piO5LiA5Liq5Zub6L655b2i5Li66I+x5b2i55qE55CG6K665L6d5o2u77yM5bi455So5LiJ56eN5pa55rOV77yaPGJyPuKRoOWumuS5ie+8mzxicj7ikaHlm5vovrnnm7jnrYnvvJs8YnI+4pGi5a+56KeS57q/5LqS55u45Z6C55u05bmz5YiG77yO
正确答案：Qg==
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
3/5单选题
难度：
3.在△ABC中，点D、E、F分别在BC、AB、CA上，且DE∥CA，DF∥BA，则下列三种说法：
①如果∠BAC=90°，那么四边形AEDF是矩形
②如果AD平分∠BAC，那么四边形AEDF是菱形
③如果AD⊥BC且AB=AC，那么四边形AEDF是菱形
其中正确的有
①如果∠BAC=90°，那么四边形AEDF是矩形
②如果AD平分∠BAC，那么四边形AEDF是菱形
③如果AD⊥BC且AB=AC，那么四边形AEDF是菱形
其中正确的有
| A | 3个 |
| B | 2个 |
| C | 1个 |
| D | 0个 |
- 提示1：
- 5qC55o2u6aKY5oSP5Y+v5b6X5Zub6L655b2iQUVERuaYr+W5s+ihjOWbm+i+ueW9ou+8m+eUseKIoEJBQz05MMKw77yM5b6X5Zub6L655b2iQUVERuaYr+efqeW9og==
- 提示2：
- 55SxQUTlubPliIbiiKBCQUPvvIzlvpflm5vovrnlvaJBRURG5piv6I+x5b2i77yb5b2TQUTiiqVCQ+S4lEFCPUFD5pe277yM5Zub6L655b2iQUVERuaYr+iPseW9ou+8jg==
正确答案：QQ==
6Kej77ya4oi1REXiiKVDQe+8jERG4oilQkHvvIw8YnI+4oi05Zub6L655b2iQUVERuaYr+W5s+ihjOWbm+i+ueW9ou+8mzxicj7iiLXiiKBCQUM9OTDCsO+8jDxicj7iiLTlm5vovrnlvaJBRURG5piv55+p5b2i77ybPGJyPuKItUFE5bmz5YiG4oigQkFD77yMPGJyPuKItOKIoEVBRD3iiKBGQUTvvIw8YnI+4oi04oigRkFEPeKIoEFERu+8jDxicj7iiLRBRj1ERu+8jDxicj7iiLTlm5vovrnlvaJBRURG5piv6I+x5b2i77ybPGJyPuKItUFE4oqlQkPkuJRBQj1BQ++8jDxicj7iiLRBROW5s+WIhuKIoEJBQ++8jDxicj7iiLTlm5vovrnlvaJBRURG5piv6I+x5b2i77ybPGJyPuaVheKRoOKRoeKRouato+ehru+8jjxicj7mlYXpgIlB77yO
4/5单选题
难度：
4.如图，在给定的一张平行四边形纸片上作一个菱形．甲、乙两人的作法如下：
甲：连接AC，作AC的垂直平分线MN分别交AD，AC，BC于M，O，N，连接AN，CM，则四边形ANCM是菱形．
乙：分别作∠A，∠B的平分线AE，BF，分别交BC，AD于E，F，连接EF，则四边形ABEF是菱形．
根据两人的作法可判断
甲：连接AC，作AC的垂直平分线MN分别交AD，AC，BC于M，O，N，连接AN，CM，则四边形ANCM是菱形．
乙：分别作∠A，∠B的平分线AE，BF，分别交BC，AD于E，F，连接EF，则四边形ABEF是菱形．
根据两人的作法可判断
| A | 甲正确，乙错误 |
| B | 乙正确，甲错误 |
| C | 甲、乙均正确 |
| D | 甲、乙均错误 |
- 提示1：
- 6aaW5YWI6K+B5piO4pazQU9N4omM4pazQ09O77yIQVNB77yJ77yM5Y+v5b6XTU89Tk/vvIzlho3moLnmja7lr7nop5Lnur/kupLnm7jlubPliIbnmoTlm5vovrnlvaLmmK/lubPooYzlm5vovrnlvaLlj6/liKTlrprliKTlrprlm5vovrnlvaJBTkNN5piv5bmz6KGM5Zub6L655b2i
- 提示2：
- 55SxQUPiiqVNTu+8jOWPr+agueaNruWvueinkue6v+S6kuebuOWeguebtOeahOWbm+i+ueW9ouaYr+iPseW9ouWIpOWumuWHukFOQ03mmK/oj7HlvaI=
- 提示3：
- 5Zub6L655b2iQUJDROaYr+W5s+ihjOWbm+i+ueW9ou+8jOWPr+agueaNruinkuW5s+WIhue6v+eahOWumuS5ieWSjOW5s+ihjOe6v+eahOWumuS5ie+8jOaxguW+l0FCPUFG77yM5omA5Lul5Zub6L655b2iQUJFRuaYr+iPseW9ou+8jg==
正确答案：Qw==
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
5/5单选题
难度：
5.
如图，在四边形ABCD中，E、F、G、H分别是AB、BD、CD、AC的中点，要使四边形EFGH是菱形，则四边形ABCD只需要满足一个条件，是（ ）
| A | 四边形ABCD是梯形 |
| B | 四边形ABCD是菱形 |
| C | 对角线AC=BD |
| D | AD=BC |
- 提示1：
- PHA+5Yip55So5LiJ6KeS5b2i5Lit5L2N57q/5a6a55CG5Y+v5Lul6K+B5b6X5Zub6L655b2iRUZHSOaYr+W5s+ihjOWbm+i+ueW9ou+8m+eEtuWQjueUseiPseW9oueahOWIpOWumuWumueQhui/m+ihjOino+etlDxicj48L3A+
正确答案：RA==
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