1 . 如图,在四边形
中,
,对角线
、
交于点
,
,且
平分
,过点
作
交
的延长线于点
.
(1)求证:四边形
是菱形;
(2)若
,
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd8e727e4efc22b49649f71ae9c9d84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0944865f14b13a772526c4cae4f29c99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947ca8e0cdbeb4aab80ce9e7b63ba98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f913298f0fae9f55377a8deab9f099dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/27/92ab9071-8068-4445-8d33-c43dcece7c93.png?resizew=163)
(1)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06201e4f55b78d8b30afb257d5a1b16b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/714cc3707bba3bfdb56e251999be8592.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcb49df05f2e31d005735c3f14a21d30.png)
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2 . 在矩形
中,
,
,点
是
上,且
,点
是矩形
边上一个动点,连接
,若
与矩形
的边构成
角时,则此时![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a71a9d21f77e9535de152bb33f802bb.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/077c956ac0eb05cf120e14f17413dfa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267ace52b64e1e7dfc5211e033255b7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30b0393ce62b24aa5f9b740d4cc6743b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ac09dc1ca2cdd7aef28c218763d3e4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a71a9d21f77e9535de152bb33f802bb.png)
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3 . 如图,在平面直角坐标系中,
的边
在
轴上,
轴,点
的坐标为
,
,将
向下方平移,得到
,且点
的对应点
落在反比例函数
的图象上,点
的对应点
落在
轴上,连接
,
.
(1)求证:四边形
为平行四边形;
(2)求反比例函数
的表达式;
(3)求
平移的距离及线段
扫过的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cbea3f964b81d5077a4db9c4de1fa00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00ccfd5d01a4ca0cdb90cb9cdd3ad30d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/412de93a9a3a2dfbb727b793453c4196.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a8dccfaf49b0f8e0fd927f30a50cdfd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/28/d186834c-42ab-417a-a395-e5bdaaf5f6b9.png?resizew=166)
(1)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0673b104672ac58d8a0e675f045df325.png)
(2)求反比例函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/412de93a9a3a2dfbb727b793453c4196.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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4 . 在2022年卡塔尔世界杯上足球巨星梅西带领的阿根廷队获得冠军.在决赛中,法国球员姆巴佩在离对方球门30米处的
点处起脚吊射(把球高高地挑过守门员的头顶,射入球门),假如球飞行的路线是一条抛物线,在飞出水平距离16米时,足球达到最大高度8米.如图所示,以姆巴佩所在位置
点为原点,姆巴佩与对方球门所在直线为
轴,建立平面直角坐标系.
(1)求满足条件的抛物线的函数表达式;
(2)如果阿根廷球员蒙铁尔站在法国球员姆巴佩前3米处,蒙铁尔跳起后最高能达到
米,那么蒙铁尔能否在空中截住这次吊射?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/27/f9b5bc4c-1d45-4d18-a1a4-8d7b32ee65cc.png?resizew=509)
(1)求满足条件的抛物线的函数表达式;
(2)如果阿根廷球员蒙铁尔站在法国球员姆巴佩前3米处,蒙铁尔跳起后最高能达到
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9eb0ed6df9f9e59651ba2d94e95c859.png)
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5 . 化简求值:
,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a78dc6007020e4522dc13cc3eea9869f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d0512788c29bf6f54d57d190a3474b9.png)
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6 . 请仅用无刻度的直尺,分别按下列要求画图(保留画图痕迹).
(1)在图①中,已知平行四边形
边
的中点
,画出
边上的中点;
(2)在图②中,已知四边形
中,
,
,点
是边
中点,画出以
、
为边的平行四边形
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/28/085e8d79-f51a-47ba-b5b6-dffd29c083c7.png?resizew=359)
(1)在图①中,已知平行四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(2)在图②中,已知四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01ff27eea7545bb06f9472f91290c54e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e86b2c0468bc8a7ca5f3bba74dd0b86c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5178ba8ee7c27f3a06d10e45e4d8a916.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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7 . 《小猪佩奇》这部动画片,估计同学们都非常喜欢.周末,小猪佩奇一家4口人(小猪佩奇,小猪乔治,小猪妈妈,小猪爸爸)到一家餐厅就餐,包厢有一圆桌,旁边有四个座位(A,
,C,
).
(1)小猪佩奇随机坐到
座位的概率是________;
(2)若现在由小猪佩奇,小猪乔治两人先后选座位,用树状图或列表的方法计算出小猪佩奇和小猪乔治坐对面的概率.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/27/3d51f4f5-85b2-4097-830e-35c539f38918.png?resizew=385)
(1)小猪佩奇随机坐到
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若现在由小猪佩奇,小猪乔治两人先后选座位,用树状图或列表的方法计算出小猪佩奇和小猪乔治坐对面的概率.
您最近一年使用:0次
8 . 如图1是一盏可调节台灯,图2为其平面示意图,固定底座
与水平面
垂直,
为固定支撑杆,BC为可绕着点B旋转的调节杆,若
,
,
,
,
,求台灯灯体
到水平面
的距离.(结果精确到
,参考数据:
,
,
,
,
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dc9018fd90522f3e6df4fbdf3c1b88d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e2945172cdc1fd86b8d1d1046bfe38f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce62bfefacedc6efc521bddf80ea8155.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bdf04df837b840a9283f782ea78190b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2804f8aad6be59ce31602a5555724dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a87796ee30e6c5d5e6b6285b32abe10c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/548886cc097885e50ba71fa992947bfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38fc0370990fa77b95e0e64a33080568.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48539491ba4b4f9009150bd55b039ef1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a643249504c6090ac86e2982819e791c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/158d347b3b739c23928d8f02132bebdc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/28/9f2354ca-aba9-411a-98a2-2077aa0e0ea9.png?resizew=234)
您最近一年使用:0次
9 . 如图,在
中,
,以
为直径的
分别与
,
交于点
,
,过点
作
,垂足为点
.
(1)求证:直线
是圆
的切线;
(2)求证:
;
(3)若圆
的半径为8,
,求扇形
(阴影部分)的周长(结果保留
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/870fa9709a70b3d99118b4b671fb016f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/761a77e11e1e45c2a8b2d34d22cf8e04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/28/51634e43-6ee4-48be-90ee-13db257fdf6d.png?resizew=146)
(1)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df22e681ce2be99e68d72cff1e5e0010.png)
(3)若圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81c2cff64a135d7d79a51fb388702065.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1d5fed6f61cf33e780586ad8e3234ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70f5389990c3a0c5373f3bd9fb2454c9.png)
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10 . (1)计算:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e22ecc28a111519c5b460d8edbb2f220.png)
(2)解不等式组
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e22ecc28a111519c5b460d8edbb2f220.png)
(2)解不等式组
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24b09d6e8a3681a274abae6aefbdb066.png)
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