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.若A（-2，0），B（3，0），C（0，-4），则三角形ABC的面积为（ ）
| A: 2 |
| B: 3 |
| C: 4 |
| D: 10 |
一次做对，真牛！
+5奖励规则>
- 提示1：IOWcqOWdkOagh+ezu+S4reagh+WHuueCue+8jOagueaNruS4ieinkuW9oumdouenr+eahOiuoeeul+WFrOW8j++8jOaxguWHuuWNs+WPrw==
- 答案：RA==
PGRpdj7op6PvvJrnlLHlm77lj6/nn6XvvIw8aW1nIHdpZHRoPTI3NiBoZWlnaHQ9NDIgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8yMy81Mi9yQkFDRTFNTVZxbURoWUlnQUFBRUNDYUVVa3M4OTMucG5nIj48L2Rpdj4=
本课配套习题挑战模式2/5
单选题
难度系数：
2.
如图，求出四边形ABCD的面积（ ）
| A: 16.5 |
| B: 18.5 |
| C: 17 |
| D: 18 |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+5Zub6L655b2iQUJDROaYr+S4jeinhOWImeeahOWbm+i+ueW9ou+8jOmdouenr+S4jeiDveebtOaOpeaxgu+8jOaIkeS7rOWPr+S7peWIqeeUqOihpeW9ouadpeaxgjwvcD4=
- 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.
如图，直角坐标系中，△ABC的顶点都在网格点上，其中，C点坐标为（1，2），则△ABC的面积( )为平方单位
| A: 4 |
| B: 5 |
| C: 6 |
| D: 7 |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+57uT5ZCI5Zu+5b2i77yM5YiZ5LiJ6KeS5b2i55qE6Z2i56ev562J5LqO55+p5b2i55qE6Z2i56ev5YeP5Y675LiJ5Liq55u06KeS5LiJ6KeS5b2i55qE6Z2i56evPC9wPg==
- 答案：Qg==
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
本课配套习题挑战模式4/5
单选题
难度系数：
4.
已知三角形三个顶点坐标,A（-1，4）,B（3，3），C（4，-1），计算S△ABC=( )
| A:
|
| B:
|
| C:
|
| D:
|
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+6L+H54K5QeWSjOeCuUPliIbliKvlkJF46L205ZKMeei9tOW8leWegue6v++8jOS4pOWegue6v+S6pOS6jueCuUQuIOi/h+eCuULlkJF46L205byV5Z6C57q/77yM5LqkQ0Tkuo7ngrlF77yM5YiZUzxzdWI+4pazPC9zdWI+PHN1Yj5BQkM8L3N1Yj49UzxzdWI+55u06KeS5qKv5b2iQURFQjwvc3ViPitTPHN1Yj7ilrM8L3N1Yj48c3ViPkJFQzwvc3ViPi1TPHN1Yj7ilrM8L3N1Yj48c3ViPkFEQzwvc3ViPi48L3A+
- 答案：RA==
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
本课配套习题挑战模式5/5
单选题
难度系数：
5.
已知四边形的四个顶点为A（8，0），B（0，3），C（-2，0），D（0，-12），则四边形的面积是( )
| A: 75 |
| B: 76 |
| C: 77 |
| D: 78 |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+5bCG5LiN6KeE5YiZ5Zub6L655b2iQUJDROWIhuWJsuS4uuWbm+S4quebtOinkuS4ieinkuW9oumdouenr+axguWSjDwvcD4=
- 答案：QQ==
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
