中学生网络课堂本课配套习题挑战模式1/5
单选题
难度系数：
1.不能判定四边形ABCD为平行四边形的条件是（ ）
| A: AB=CD，AD=BC |
| B: AB=CD，AB∥CD |
| C: AB=CD，AD∥CD |
| D: AD=BC，AD∥BC |
一次做对，真牛！
+5奖励规则>
- 提示1：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
- 答案：Qw==
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
本课配套习题挑战模式2/5
单选题
难度系数：
2.
四边形ABCD中，对角线AC、BD相交于点O，给出下列四组条件：①AB∥CD，AD∥BC；②AB=CD，AD=BC；③AO=CO，BO=DO；④AB∥CD，AD=BC．其中一定能判断这个四边形是平行四边形的条件共有（ ）
| A: 4组 |
| B: 3组 |
| C: 2组 |
| D: 1组 |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+5qC55o2u5bmz6KGM5Zub6L655b2i55qE5Yik5pat5a6a55CG5Y+v5L2c5Ye65Yik5pat77yOPC9wPg==
- 答案：Qg==
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
本课配套习题挑战模式3/5
单选题
难度系数：
3.点A、B、C是平面内不在同一条直线上的三点，点D是平面内任意一点，若A、B、C、D四点恰能构成一个平行四边形，则在平面内符合这样条件的点D有（ ）
| A: 1个 |
| B: 2个 |
| C: 3个 |
| D: 4个 |
一次做对，真牛！
+5奖励规则>
- 提示1：5qC55o2u5bmz6Z2i55qE5oCn6LSo5ZKM5bmz6KGM5Zub6L655b2i55qE5Yik5a6a5rGC6Kej
- 答案：Qw==
6Kej77ya55Sx6aKY5oSP55S75Ye65Zu+5b2i77yM5Zyo5LiA5Liq5bmz6Z2i5YaF77yM5LiN5Zyo5ZCM5LiA5p2h55u057q/5LiK55qE5LiJ54K577yM5LiOROeCueaBsOiDveaehOaIkOS4gOS4quW5s+ihjOWbm+i+ueW9ou+8jOespuWQiOi/meagt+adoeS7tueahOeCuUTmnIkz5Liq77yOPGJyPjxpbWcgd2lkdGg9MTYxIGhlaWdodD0xMDIgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC9GQS8xOC9yQkFDRkZVX1MyT3hFRy0xQUFBTnhRRUhKVUk5NjEucG5nIiBhbHQ96Z2S5p6c5a2m6ZmiPjxicj7mlYXpgInvvJpD77yO
本课配套习题挑战模式4/5
单选题
难度系数：
4.如图，在四边形ABCD中，对角线AC、BD相交于点O，下列条件不能判定四边形ABCD为平行四边形的是（ ）
| A: AB∥CD，AD∥BC |
| B: OA=OC，OB=OD |
| C: AD=BC，AB∥CD |
| D: AB=CD，AD=BC |
一次做对，真牛！
+5奖励规则>
- 提示1：5qC55o2u5bmz6KGM5Zub6L655b2i55qE5Yik5a6a5a6a55CG5YiG5Yir6L+b6KGM5YiG5p6Q5Y2z5Y+v77yO
- 答案：Qw==
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
本课配套习题挑战模式5/5
单选题
难度系数：
5.在四边形ABCD中，对角线AC、BD相交于点O，∠ADB=∠CBD，添加下列一个条件后，仍不能判定四边形ABCD是平行四边形的是（ ）
| A: ∠ABD=∠CDB |
| B: ∠DAB=∠BCD |
| C: ∠ABC=∠CDA |
| D: ∠DAC=∠BCA |
一次做对，真牛！
+5奖励规则>
- 提示1：5Yip55So5bmz6KGM5Zub6L655b2i55qE5Yik5a6a5a6a55CG6YCQ5q2l5Yik5a6a5ZCO5Y2z5Y+v56Gu5a6a562U5qGI77yO
- 答案：RA==
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
