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.正方形具有而矩形不一定具有的性质是（ ）
| A: 对角线互相平分 |
| B: 对角线相等 |
| C: 四个角都相等 |
| D: 对角线互相垂直 |
一次做对，真牛！
+5奖励规则>
- 提示1：6ICD5p+l5q2j5pa55b2i5a+56KeS57q/55u45LqS5Z6C55u05bmz5YiG55u4562J5LiO55+p5b2i5a+56KeS57q/5bmz5YiG55u4562J55qE5oCn6LSo77yO
- 答案：RA==
6Kej562U77yaQeOAgeW5s+ihjOWbm+i+ueW9ouWvueinkue6v+mDveaYr+W5s+WIhueahO+8jOaVhemUmeivr++8mzxicj5C44CB55+p5b2i77yM5q2j5pa55b2i5a+56KeS57q/6YO95piv55u4562J55qE77yM5pWF6ZSZ6K+v77ybPGJyPkPjgIHmraPmlrnlvaLvvIznn6nlvaLlm5vkuKrop5Lpg73mmK/nm7Top5LvvIzmlYXplJnor6/vvJs8YnI+ROOAgeato+aWueW9ouWvueinkue6v+ebuOS6kuWeguebtO+8jOS9huefqeW9ouWvueinkue6v+S4jeS4gOWumuWeguebtO+8jOaVheato+ehru+8jg==
本课配套习题挑战模式2/5
单选题
难度系数：
2.如图，四边形ABCD是正方形，延长BC至点E，使CE=CA，连接AE交CD于点F，则∠AFC的度数是()
| A: 150° |
| B: 125° |
| C: 135° |
| D: 112.5° |
一次做对，真牛！
+5奖励规则>
- 提示1：55Sx5LiJ6KeS5b2i5Y+K5q2j5pa55b2i5a+56KeS57q/55u45LqS5Z6C55u05bmz5YiG55u4562J55qE5oCn6LSo6L+b6KGM6K6h566X5rGC6Kej77yM5oqK5ZCE6KeS5LmL6Ze05YWz57O75om+5Yiw5Y2z5Y+v5rGC6Kej77yO
- 答案：RA==
6Kej77ya4oi15Zub6L655b2iQUJDROaYr+ato+aWueW9ou+8jENFPUNBPGJyPuKItOKIoEFDRT00NcKwKzkwwrA9MTM1wrDiiKBFPTIyLjXCsDxicj7iiLTiiKBBRkM9OTDCsCsyMi41wrA9MTEyLjXCsO+8jjxicj7mlYXpgIlE77yO
本课配套习题挑战模式3/5
单选题
难度系数：
3.在正方形ABCD的边AB、BC、CD、DA上分别任意取点E、F、G、H．这样得到的四边形EFGH中，是正方形的有（ ）
| A: 1个 |
| B: 2个 |
| C: 3个 |
| D: 无穷多个 |
一次做对，真牛！
+5奖励规则>
- 提示1：5Zyo5q2j5pa55b2i5Zub6L655LiK5Lu75oSP5Y+W54K5ReOAgUbjgIFH44CBSO+8jOiLpeiDveivgeaYjuWbm+i+ueW9okVGR0jkuLrmraPmlrnlvaLvvIzliJnor7TmmI7lj6/ku6XlvpfliLDml6DnqbfkuKrmraPmlrnlvaLvvI4=
- 答案：RA==
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
本课配套习题挑战模式4/5
单选题
难度系数：
4.
将五个边长都为2cm的正方形按如图所示摆放，点A、B、C、D分别是四个正方形的中心，则图中四块阴影面积的和为（ ）
| A: 2cm2 |
| B: 4cm2 |
| C: 6cm2 |
| D: 8cm2 |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+6L+e5o6lQVDjgIFBTu+8jOeCuUHmmK/mraPmlrnlvaLnmoTlr7nop5Lnur/nmoTkuqTngrnvvIzliJlBUD1BTu+8jOKIoEFQRj3iiKBBTkU9NDXCsO+8jOaYk+W+l1BBRuKJjOKWs05BRe+8jDxicj48L3A+
- 提示2：PHA+5Zub6L655b2iQUVORueahOmdouenr+etieS6juKWs05BUOeahOmdouenr++8jDxicj48L3A+
- 答案：Qg==
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
本课配套习题挑战模式5/5
单选题
难度系数：
5.如图所示，在正方形ABCD所在平面找点P，使得△PAB、△PBC、△PDC、△PAD均为等腰三角形，则满足条件的点P有( )
| A: 5 |
| B: 9 |
| C: 11 |
| D: 13 |
一次做对，真牛！
+5奖励规则>
- 提示1：5qC55o2u6aKY5oSP5b6X5Ye65pyJ5LiJ56eN5oOF5Ya14pGg5q2j5pa55b2i5a+56KeS57q/5Lqk54K577yM4pGh55S75Ye65Zu+5b2i77yM57uT5ZCI5Zu+5b2i5b6X5Ye657uT6K6677yM4pGi5ZKM4pGh57G75Ly85b6X5Ye656ym5ZCI5p2h5Lu255qE5Zub5Liq54K577yM5Y2z5Y+v5b6X5Ye6562U5qGI77yO
- 答案：Qg==
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
