如图所示,已知
,
,且满足
,点
为
轴正半轴上一点,点
为第一象限一动点,点
为
的延长线上一点,
平分
,连
与
轴交于点
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/16/2ba77f3a-410c-40ff-8ed6-96fde9860c53.png?resizew=362)
(1)求
,
两点的坐标;
(2)猜想图中线段
,
,
之间的数量关系,并证明你的结论;
(3)若
,且
为等腰三角形,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4776e87dd96658bb5ffe1b09cb98c03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ade31720af00c25800279a27c45c95cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ff42a9ed0a6a1f296fdcb0d527be5e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.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/14b49022a6f55817b5d7e3ab443b5491.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80672dda9430cb42b3136bcb1b67bbad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947ca8e0cdbeb4aab80ce9e7b63ba98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/445146721669bb2c4999df44bf4f71e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/16/2ba77f3a-410c-40ff-8ed6-96fde9860c53.png?resizew=362)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)猜想图中线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61182c456ed7b68095a762967ae47744.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91547f8d28535435f6482f28557e90a.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8164e33e77d93448d8fd0e0003d6328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9374cdec65a41dc616f6f099551880d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf34d7984aa53ae3efb6088aeaacc718.png)
更新时间:2023-12-15 16:46:31
|
相似题推荐
解答题-问答题
|
较难
(0.4)
【推荐1】在平面直角坐标系中,点
,点
,且
,
满足
.
(1)求点
,点
的坐标;
(2)将线段
向左平移2个单位得到线段
(点
的对应点为点
,点
的对应点为点
),线段
与
轴交于点
,求点
的坐标;
(3)点
为(2)中直线
上一动点,连接
,
,设点
的横坐标为
,三角形
的面积为
,当
时,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3160fc73f2a90ae4a1a97351ab2673b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9199b50dd0036be9b764c621d1d46f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/867116ee60c2b3d70e36b701459e236d.png)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)将线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(3)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2730b513bd3359c3dfe6567e04f5ef9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/114361ff9b40887a470b05ccb727712a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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名校
【推荐2】如图,在平面直角坐标系中,点A(0,a)、C(b,0)满足
+|b﹣2|=0.
(1)求点A、点C的坐标;
(2)已知坐标轴上有两动点P、Q同时出发,P点从C点出发向左以1单位长度每秒的速度匀速移动,Q点从O点出发以2个单位长度每秒的速度向上移动,点D(1,2)是线段AC上一点,设运动时间为t(t>0)秒,当S△ODQ=2S△ODP时,此时是否存在点M(m,6),使得S△ODM=3S△ODQ,若存在,求出点M的坐标;若不存在,请说明理由;
(3)点F是线段AC上一点,满足∠FOC=∠FCO,点G是第二象限中一点,连接OG,使得∠AOG=∠AOF,点E是线段OA上一动点,连接CE交OF于点H,当点E在线段OA上运动的过程中,直接写出
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8506eac81f673a9ac50a5a4eae8486f1.png)
(1)求点A、点C的坐标;
(2)已知坐标轴上有两动点P、Q同时出发,P点从C点出发向左以1单位长度每秒的速度匀速移动,Q点从O点出发以2个单位长度每秒的速度向上移动,点D(1,2)是线段AC上一点,设运动时间为t(t>0)秒,当S△ODQ=2S△ODP时,此时是否存在点M(m,6),使得S△ODM=3S△ODQ,若存在,求出点M的坐标;若不存在,请说明理由;
(3)点F是线段AC上一点,满足∠FOC=∠FCO,点G是第二象限中一点,连接OG,使得∠AOG=∠AOF,点E是线段OA上一动点,连接CE交OF于点H,当点E在线段OA上运动的过程中,直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/279be6ebb1ee0f39e3a4a3162b9faab4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/17/d6430b24-07bd-47a5-9ef3-32bbd842abd0.png?resizew=485)
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【推荐1】如图1,在平面直角坐标系中,A点的坐标为(m,m),B点的坐标为(0,n),且m、n满足|a+m﹣n|+(m﹣3)2=0 (a为常数).
(1)求△OAB的面积(用a含的式子表示).
(2)如图2,点C为x轴负半轴上一点,且∠OCA=∠ABO,求BO-OC的值.
(3)在有AB2=a2+m2的条件下,若AB=2m,x轴上是否存在一点P点,使∠ABO=2∠OPA,若存在,求出P点的坐标;若不存在,说明理由.
(1)求△OAB的面积(用a含的式子表示).
(2)如图2,点C为x轴负半轴上一点,且∠OCA=∠ABO,求BO-OC的值.
(3)在有AB2=a2+m2的条件下,若AB=2m,x轴上是否存在一点P点,使∠ABO=2∠OPA,若存在,求出P点的坐标;若不存在,说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/23/0a8d85ba-52cc-4772-85a1-571fdc725c2d.png?resizew=344)
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较难
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【推荐2】如图,已知抛物线y=a
+bx-3(a
)的对称轴为直线x=1,交x轴于D,且抛物线交x轴于A(-1,0),B两点,与y轴交于点C
(1)求抛物线的表达式
(2)设点P为第四象限抛物线上的一个动点,求使ΔCPB面积最大的点P的坐标
(3)点Q是对称轴x=1上的一点,是否存在点Q,使得ΔDCQ是等腰三角形?若存在,求出点Q的坐标,若不存在,说明理由
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0a89e3c30f6e4d4c5db4378b05d987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/633bfa50f6ac2eccaa4882b40fde14fd.png)
(1)求抛物线的表达式
(2)设点P为第四象限抛物线上的一个动点,求使ΔCPB面积最大的点P的坐标
(3)点Q是对称轴x=1上的一点,是否存在点Q,使得ΔDCQ是等腰三角形?若存在,求出点Q的坐标,若不存在,说明理由
![](https://img.xkw.com/dksih/QBM/2021/1/13/2635017990791168/2638877043187712/STEM/bca80590-e899-438c-a226-aa24f28daebf.png)
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解答题-证明题
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解题方法
【推荐1】如图 1,在直角三角形 ABC 中, BAC 90°, AD 为斜边 BC 上的高线.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/18/fe8e0691-438a-437f-8fb2-169618abd94a.png?resizew=509)
(1)求证: AD
BD CD ;
(2)如图 2,过 A 分别作BAD,DAC 的角平分线,交 BC 于 E, M 两点,过 E 作 AE 的垂线, 交 AM 于 F .
①当tan C
时,求
的值;
② 如图 3 ,过 C 作 AF 的垂线 CG ,过 G 点作 GN // AD 交 AC 于 M 点, 连接 MN .若EAD 15°, AB 1,直接写出 MN 的长度.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/18/fe8e0691-438a-437f-8fb2-169618abd94a.png?resizew=509)
(1)求证: AD
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/921ef5abce73648e3834140df9a72aa8.png)
(2)如图 2,过 A 分别作BAD,DAC 的角平分线,交 BC 于 E, M 两点,过 E 作 AE 的垂线, 交 AM 于 F .
①当tan C
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b2a698891d42c70b597f0da4f215f09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ada99d817630dfc4ffe829f3c97365b.png)
② 如图 3 ,过 C 作 AF 的垂线 CG ,过 G 点作 GN // AD 交 AC 于 M 点, 连接 MN .若EAD 15°, AB 1,直接写出 MN 的长度.
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【推荐2】如图1,在平面直角坐标系中,直线
与
轴交于点
,与直线
交于点
.
(1)求
的值;
(2)点
是直线
上一动点.
①如图2,当点
恰好在
的角平分线上时,求直线
的函数表达式;
②是否存在点
,使得
,若存在,请求出点
的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbc9f6cf70f80f04167172247b747ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a841684ae8eb4ef3abcaa75ac85d11e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c53cfa785f3d78e95a3b170180fd4b4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/20/e86d5e97-c220-4f16-8ad5-e366899bb064.jpg?resizew=318)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
①如图2,当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
②是否存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3e827be79b4aa00f23a78aa87b858a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
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名校
【推荐1】如图,
是等腰直角三角形,
,
.动点P从点A出发,沿折线
以每秒2个单位的速度向终点B运动,过点P作
交边
于点D(点P不与点A、B、C重合),
绕点P沿逆时针方向旋转
得到
,连接
,设点P的运动时间为t(秒).
时,
的长为______;
(2)求
的长(用含t的代数式表示);
(3)当点F落在
的边上时,求
的周长;
(4)连接
、
,直接写出
的面积为5时t的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bdde4e517a4e6c9113b742a4df00c47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a52ef2a5f53a6d6aed3617b64b3d58b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/545e18836bc7fee22f8f813a6f525d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2a51944c720568f35d443589dfc1aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
(3)当点F落在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95558cdc4ce1e6d9462d2e91c070655f.png)
(4)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6830ebecddbd9759be626289c408e4f3.png)
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【推荐2】如图1,
为锐角三角形
的外接圆,点
在劣弧
上,点F在
上,
交
于点
,且
,
交
于点
,
,连结
,
.设
.
.
(2)求证:
.
(3)如图2,
为
的直径.
①当
的长为2时,求
的长.
②当
时,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1affe8ac959b7a782406a91c0f62e86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f014b2bcd9088d672e4e36581a22fa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/110458927f3f396a5bc27ea4a3b1a3e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c029e4ab80f8a2080d59ba73841f364f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95ee1c8b8f17e6adfe29201544ee304c.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2b18474f6589979d83b59ac2a8cd974.png)
(3)如图2,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/667349d99185bb045030b733352ff7fd.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8407dc317a46118730b9d5826cbbb9f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3a282d19bf2c827a98d4443330f7ca1.png)
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