中学生网络课堂
初二数学 (苏科版下册)
特殊的平行四边形
本课配套习题挑战模式1/5
单选题
难度系数：
1.如图，分别在△ABC的AB、AC两边上向外作正方形ABDE和ACFG，连接EC、BG. 判断EC、BG的大小关系正确的是（ ）
| A: EC＞BG |
| B: EC=BG |
| C: EC＜BG |
| D: 不能确定 |
一次做对，真牛！
+5奖励规则>
- 提示1：IOimgeaxguS4pOadoee6v+auteeahOmVv+W6puWFs+ezu++8jOaKiuS4pOadoee6v+auteaUvuWIsOS4pOS4quS4ieinkuW9ouS4re+8jOWIqeeUqOS4ieinkuW9oueahOWFqOetieaxguW+l+S4pOadoee6v+auteebuOetiS4=
- 答案：Qg==
6Kej77yaRUM9QkcuIDxicj7nkIbnlLHvvJrlnKjmraPmlrnlvaJBQkRF77yMPGJyPkFFPUFC77yMPGJyPuKIoEVBQj05MMKw77yMPGJyPuWPiOWcqOato+aWueW9okFDRkfvvIw8YnI+QUc9QUPvvIw8YnI+4oigR0FDPTkwwrDvvIw8YnI+4oi04oigRUFCPeKIoEdBQz05MMKw77yMPGJyPuKIteKIoEVBQz3iiKBFQUIr4oigQkFD77yMPGJyPkdBQj3iiKBHQUMr4oigQkFD77yMPGJyPuKItOKIoEVBQz3iiKBHQULvvIw8YnI+4oi04pazRUFD4omM4pazR0FC77yMPGJyPuKItEVDPUdCLiA8YnI+5pWF6YCJQg==
本课配套习题挑战模式2/5
单选题
难度系数：
2.如图，在边长为2的正方形ABCD中，M为边AD的中点，延长MD至点E，使ME=MC，以DE为边作正方形DEFG，点G在边CD上，则DG的长为（ ）
A:  |
B:  |
C:  |
D:  |
一次做对，真牛！
+5奖励规则>
- 提示1：IOWIqeeUqOWLvuiCoeWumueQhuaxguWHukNN55qE6ZW/77yM5Y2zTUXnmoTplb/vvIzmnIlERT1ER++8jOaJgOS7peWPr+S7peaxguWHukRF77yM6L+b6ICM5b6X5YiwREfnmoTplb8u
- 答案：RA==
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
本课配套习题挑战模式3/5
单选题
难度系数：
3.如图，四边形ABCD、AEFG均为正方形，其中E在BC上，且B、E两点不重合，并连接BG. 根据图中标示的角判断下列∠1、∠2、∠3、∠4的大小关系何者正确？（ ）
| A: ∠1＜∠2 |
| B: ∠1＞∠2 |
| C: ∠3＜∠4 |
| D: ∠3＞∠4 |
一次做对，真牛！
+5奖励规则>
- 提示1：IOagueaNruato+aWueW9oueahOavj+S4gOS4quinkumDveaYr+ebtOinkuaxguWHuuKIoEJBRD3iiKBFQUc9OTDCsO+8jOeEtuWQjuagueaNruWQjOinkueahOS9meinkuebuOetieWPr+W+l+KIoDE94oigMu+8jOagueaNruebtOinkuS4ieinkuW9ouaWnOi+ueWkp+S6juebtOinkui+ueWPr+W+l0FF77yeQULvvIzku47ogIzlvpfliLBBR++8nkFC77yM5YaN5qC55o2u5LiJ6KeS5b2i5Lit6ZW/6L655omA5a+555qE6KeS5aSn5LqO55+t6L655omA5a+555qE6KeS5rGC5Ye64oigM++8nuKIoDQu
- 答案：RA==
6Kej77ya4oi15Zub6L655b2iQUJDROOAgUFFRkflnYfkuLrmraPmlrnlvaLvvIw8YnI+4oi04oigQkFEPeKIoEVBRz05MMKw77yMPGJyPuKIteKIoEJBRD3iiKAxK+KIoERBRT05MMKw77yMPGJyPuKIoEVBRz3iiKAyK+KIoERBRT05MMKw77yMPGJyPuKItOKIoDE94oigMu+8jDxicj7lnKhSdOKWs0FCReS4re+8jEFF77yeQULvvIw8YnI+4oi15Zub6L655b2iQUVGR+aYr+ato+aWueW9ou+8jDxicj7iiLRBRT1BR++8jDxicj7iiLRBR++8nkFC77yMPGJyPuKItOKIoDPvvJ7iiKA0LiA8YnI+5pWF6YCJRC4g
本课配套习题挑战模式4/5
单选题
难度系数：
4.如图，正方形ABCD的边长为2，点E在AB边上. 四边形EFGB也为正方形，设△AFC的面积为S，则（ ）
| A: S=2 |
| B: S=2.4 |
| C: S=4 |
| D: S与BE长度有关 |
一次做对，真牛！
+5奖励规则>
- 提示1：IOi/nuaOpUZC77yM5qC55o2u5bey55+l5Y+v5b6X5YiwJiM4NjU4O+KWs0FCQ+S4juKWs0FGQ+aYr+WQjOW6leetiemrmOeahOS4ieinkuW9ou+8jOeUseW3suefpeWPr+axguW+l+KWs0FCQ+eahOmdouenr+S4uuWkp+ato+aWueW9oumdouenr+eahOS4gOWNiu+8jOS7juiAjOS4jemavuaxguW+l1PnmoTlgLwu
- 答案：QQ==
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
本课配套习题挑战模式5/5
单选题
难度系数：
5.如图，以△ABC的边AB、AC为边分别向外作正方形ABDE和正方形ACFG，连接EG，则△ABC与△AEG的面积之间的关系为（ ）
| A: S△ABC≥S△AEG |
| B: S△ABC≤S△AEG |
| C: S△ABC＝S△AEG |
| D: 无法确定 |
一次做对，真牛！
+5奖励规则>
- 提示1：IOi/h+eCuUPkvZxDTeKKpUFC5LqOTe+8jOi/h+eCuUfkvZxHTuKKpUVB5LqkRUHlu7bplb/nur/kuo5O77yM5YiZ4oigQU1DPeKIoEFORz05MMKw77yM5qC55o2u5q2j5pa55b2i5oCn6LSo5b6X5Ye64oigQkFFPeKIoENBRz05MMKw77yMQUI9QUXvvIxBQz1BR++8jOaxguWHuuKIoE5BRz3iiKBNQUPvvIzor4HilrNBQ03iiYzilrNBR07vvIjvvIzmjqjlh7pDTT1HTu+8jOagueaNruS4ieinkuW9oueahOmdouenr+WFrOW8j+axguWHuuWNs+WPry4=
- 答案：Qw==
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
