1 . 计算:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8eb1838579f64aa98d4696727c107df.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/501eafc317a84701b5355a3c39d8ac6b.png)
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2 . 如图,在平行四边形
中,
分别为
上两点,
,连接
.求证:四边形
为平行四边形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf9b288c48c73463a2f214f02b6952a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c28d2790a97390935125aa897417f970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ce1475f537b4ad21775bfaa16daa0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e825678030322bf7eb2f0249bf28ae25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f3c15b30bd155641e548a7d8c172dd4.png)
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3 . 如图,直线
与直线
交于点
,则关于
的不等式
的解集是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7b87e7cb5ede05e404c6647bfed482b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9ff8d8c6952d85c67728ced5b152c48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c0de4311ea1460429f177f71643fc19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78fab3ce9b7f5ff567e387f52ee7f37c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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4 . 下列计算正确的是( )
A.![]() | B.![]() |
C.![]() | D.![]() |
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5 . 如果将“6排3号”记作
,那么“3排6号”记作_________ ,
表示_______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4184c4987264b6661a8cc0a6b206d8bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bef307b7e6d0e8f30e3418d4b806b1c.png)
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6 . 如图,已知
,
,
,
与
相等吗?为什么?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c41bb45e0ed41804f778a3016f3a143.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b757f0c42ae5c9a2d6a4b19e5877b27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab00e0cff0876c4183a47f1272cf9928.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5b69d40b75d582c4b8ffa2369af1d41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d57899ad4774aed9ccc7bd23db72153.png)
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7 . 如下图,将图1三边长都是
的三角形沿着它的一边向右平移
得图2,再沿着相同方向向右平移
得图3,若按照这个规律平移,则图5中所有三角形周长的和是______
;图
中所有三角形周长的和是___________
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c78d0ab561d0c9bb9099772c596af8bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/048b61a5fb5f420c6d7de88db5bc3aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/048b61a5fb5f420c6d7de88db5bc3aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ac19e2a797cd0a408316988a63b3755.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
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8 . 15的平方根是_______ ;算术平方根是_________ ;125的立方根是________ ;
的算术平方根是__________ ;
的相反数是________ ;绝对值是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39f3fae1304b36c0aa24d98d4ae0508b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31765183582ade5b3ab2ea0a29982a7d.png)
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9 . 已知
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0fddcf2cba730f6bd620ff174af03d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c241d6ca5e68803b527f892bc0a4aed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/026757301e4a337434453acffe1e9f71.png)
A.110 | B.![]() | C.![]() | D.![]() |
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10 . 下列命题中是假命题的是( )
A.同旁内角互补,两直线平行 |
B.如果两个角互补,那么这两个角一个是锐角,一个是钝角 |
C.直线![]() |
D.若![]() ![]() ![]() |
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