(1)如图1,点
是
边
,
的垂直平分线的交点,
,
,
,则
________度,
的长为________,
面积的最大值为________;
(2)如图2,四边形
中,
,
,
,求四边形
的面积;
(3)如图3,四边形
中,
,
,
,求四边形
面积的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7251d14111473460f02a65c7531c51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9774f83067ed956a551bc41adcce0469.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f81e24376a13d648c2ed0dc73bc710e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12e515787ebe97ed2662237d9ca51ea1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)如图2,四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23b6e08fde74010412a6f14ad4dfbcc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e735a28578ba191da6d4f3b0f8e8729.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ad4c0ba3a6750537789844d0ec419d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(3)如图3,四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77960768b5215988164992660e798a74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e735a28578ba191da6d4f3b0f8e8729.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74f2bd2e52157662aaacbaf298c3a2e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/8/1cd67e4d-22e5-4df9-8cbc-e65798b885dd.png?resizew=484)
更新时间:2023-08-26 10:51:00
|
相似题推荐
解答题-问答题
|
较难
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【推荐1】如图,△ABC为等腰直角三角形,∠ABC=90°,AB=BC,点A在x轴的负半轴上,点B是y轴上的一个动点,点C在点B的上方,
(1)如图1当点A的坐标为(﹣3,0),点B的坐标为(0,1)时,求点C的坐标;
(2)设点A的坐标为(a,0),点B的坐标为(0,b).过点C作CD⊥y轴于点D,在点B运动过程中(不包含△ABC的一边与坐标轴重合的情况),猜想线段OD的长与a、b的数量关系,并说明理由;
(3)在(2)的条件下如图4,当x轴平分∠BAC时,BC交x轴于点E,过点作CF⊥x轴于点F.说明此时线段CF与AE的数量关系(用含a、b的式子表示).
(1)如图1当点A的坐标为(﹣3,0),点B的坐标为(0,1)时,求点C的坐标;
(2)设点A的坐标为(a,0),点B的坐标为(0,b).过点C作CD⊥y轴于点D,在点B运动过程中(不包含△ABC的一边与坐标轴重合的情况),猜想线段OD的长与a、b的数量关系,并说明理由;
(3)在(2)的条件下如图4,当x轴平分∠BAC时,BC交x轴于点E,过点作CF⊥x轴于点F.说明此时线段CF与AE的数量关系(用含a、b的式子表示).
![](https://img.xkw.com/dksih/QBM/2018/12/7/2091746634899456/2095407441920000/STEM/15cec7571c3346399e70873e18c89dd7.png?resizew=492)
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【推荐2】如图1所示,点E是正方形
对角线
上任意一点,过点E作
于F,
于G.
(1)
与
的数量关系是______,位置关系是______.
(2)如图2,将正方形
绕点C顺时针旋转
度(
),连接
,
,试判断
与
的关系,并说明理由;
(3)如图3,将四边形
绕点C顺时针旋转
度(
),在旋转的过程中若某一时刻点B、F、E共线,点G、E、D也共线,且当
时,直接写出线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc90fee532e50d319081d571410421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11a2ecec3e259421d01eafa941834c3b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/6/32279273-9449-4b84-8c3b-767b9b320b59.png?resizew=440)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
(2)如图2,将正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1321a4f8d931503b75c46777f70c1409.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45222329e2bb40c617c7cdfdd1280afe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
(3)如图3,将四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1321a4f8d931503b75c46777f70c1409.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/725ad15884275d9ce37dcb50f1dd2d53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/549890d0876aa5696fd6b49940ea3102.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
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【推荐1】问题探究
![](https://img.xkw.com/dksih/QBM/2022/1/10/2898390307143680/2956773990735872/STEM/7ff50af6-83c1-4f3f-b1df-bc1a8704468d.png?resizew=457)
(1)如图1,在四边形
中,
,点E是边
上一点,
,连接
,判断
的形状,并说明理由.
(2)如图2,在
中,
,点D为边
的延长线上一点,且
,过点A作
且
,连接
,求证:
.
(3)如图3,在平面直角坐标系
中,已知点
,连接
,在x轴上方是否存在一点B,使得
是等腰直角三角形,若存在,请直接写出点B的坐标;若不存在,请说明理由.
![](https://img.xkw.com/dksih/QBM/2022/1/10/2898390307143680/2956773990735872/STEM/7ff50af6-83c1-4f3f-b1df-bc1a8704468d.png?resizew=457)
(1)如图1,在四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7d8397018b0a01a1b4e9574604f9e76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e09b7ed3efe859047856bb09299ea417.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e88d8672e8521e27058252f51000281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c771a4feb150ad9cff8d70431c97eb17.png)
(2)如图2,在
![](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/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e839ac941e8bf536ff35a12e56c7a400.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e5b4ea605cf0b98e428d071f6be6762.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be5fc6ead6416492c231c320a5486f86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c056a26c993ab806c603f063f78da923.png)
(3)如图3,在平面直角坐标系
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ceec39aaaccbeaac9a4a5bdbb0f0e9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
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【推荐2】在
中,
,
,点
为
上一点,点
为
上一点,线段
,
交于点
.
(1)若
为
的角平分线.
①如图
,已知
,求证:
;
②如图
,已知
,求证:
;
(2)如图
,若
为
的中线,且
,试探究
,
,
三条线段的数量关系是______(直接写出答案).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1165830b314a0dab65ea267e82bd3f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13af018556f0b484ed38519f2edc791c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/16/ecfdc545-33a1-485c-a911-022654befbe7.png?resizew=561)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13af018556f0b484ed38519f2edc791c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
①如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed46a014ece6a0830c7c8b8deb2c56e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3201e1af764dbaf31cd1a239882bb59c.png)
②如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b60a982d3ec7a4a4d17638f8daf3cc30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9762c971608302e44b8157df68504f0b.png)
(2)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13af018556f0b484ed38519f2edc791c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b60a982d3ec7a4a4d17638f8daf3cc30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13af018556f0b484ed38519f2edc791c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1165830b314a0dab65ea267e82bd3f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccb6eb78ca96fc50b152315665461e6b.png)
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【推荐1】如图,在Rt△ABC中,∠ACB=90°,∠A=30°,BC=8,CE⊥AB于点E,D为AB上一动点,连接CD.将线段CD绕点C逆时针旋转60°得到线段CF,连接BF.
![](https://img.xkw.com/dksih/QBM/2022/3/29/2946725608366080/2955009250459648/STEM/87eb54fa-bca8-47ef-b342-e3783e564275.png?resizew=562)
(1)如图2,当点D为线段AB的中点时,点F与点B重合,则线段BD和BE之间的数量关系是______.
(2)如图1,当BD>AD时,写出线段BF,BE和BD之间的数量关系,并说明理由.
(3)当点D在线段AB上运动时,请直接写出线段AB的中点与点F之间距离的最小值.
![](https://img.xkw.com/dksih/QBM/2022/3/29/2946725608366080/2955009250459648/STEM/87eb54fa-bca8-47ef-b342-e3783e564275.png?resizew=562)
(1)如图2,当点D为线段AB的中点时,点F与点B重合,则线段BD和BE之间的数量关系是______.
(2)如图1,当BD>AD时,写出线段BF,BE和BD之间的数量关系,并说明理由.
(3)当点D在线段AB上运动时,请直接写出线段AB的中点与点F之间距离的最小值.
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【推荐2】如图,△ABC和△ADE是有公共顶点的直角三角形,∠BAC=∠DAE=90°,点P为射线BD,CE的交点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/3/8043876c-fc98-4f5b-844d-7865aacf71dc.png?resizew=418)
(1)如图1,若△ABC和△ADE是等腰三角形,猜想∠ABD和∠ACE的数量关系是 ,并说明理由;
(2)如图2,若∠ADE=∠ABC=30°,则(1)中的结论是否仍然成立成立?请说明理由.
(3)在(1)的条件下,AB=6,AD=4,若把△ADE绕点A旋转,当∠EAC=90°时,请直接写出PB的长度.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/3/8043876c-fc98-4f5b-844d-7865aacf71dc.png?resizew=418)
(1)如图1,若△ABC和△ADE是等腰三角形,猜想∠ABD和∠ACE的数量关系是 ,并说明理由;
(2)如图2,若∠ADE=∠ABC=30°,则(1)中的结论是否仍然成立成立?请说明理由.
(3)在(1)的条件下,AB=6,AD=4,若把△ADE绕点A旋转,当∠EAC=90°时,请直接写出PB的长度.
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解答题-证明题
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较难
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【推荐1】如图,
、
是
的两条直径,点
是
弧
上一点,
于点
,
于点
.![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ec7f8b0c4d2564f723cacee6c0a09a9.png)
(2)延长
、
分别交
于点
、
,作
于点
交
于点
,连接
,求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9169bec58fe718a3948bf650136fe83e.png)
(3)在(2)的条件下,连接
,
与
相交于点
,
,
交
于点
,
,四边形
的面积是
,求线段
长.
![](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/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b6cc3789c0e9b7d1226aa0de3327599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb023313112cd8a6068d013fdcc9a193.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ec7f8b0c4d2564f723cacee6c0a09a9.png)
(2)延长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f68bbfefde67ce090803b1c43866c22e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d61be62a066c7ad65f9fa64ba1de1ba4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9169bec58fe718a3948bf650136fe83e.png)
(3)在(2)的条件下,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589786dd7c3a2679c3230b671cd232d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b15febfda66e733f14aa7115ed4343a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5b629015f2add830bbf7dd9673c184a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a78abb4b37ce31f711fc7b95c2fb45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b15febfda66e733f14aa7115ed4343a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b55cd260d5854f7a21483c241e004698.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c28a7454aaf4df68a3c888c8e0fdd9ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8d1d4746a41b162ddbfb317e3ae3f6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
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解答题-证明题
|
较难
(0.4)
【推荐2】定义:如果一个四边形的一组对角互余,那么我们称这个四边形为“对角互余四边形”.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/5d95db55-14af-49f3-9d48-fba53a86890a.png?resizew=511)
(1)如图1,在“对角互余四边形”
中,
,
,求四边形
的面积.
(2)如图2,在四边形
中,连接
,
,点O是
外接圆的圆心,连接
,
.求证:四边形
是“对角互余四边形”;
(3)在(2)的条件下,如图3,已知
,连接
,求
的值.(结果用带有a,b的代数式表示)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/5d95db55-14af-49f3-9d48-fba53a86890a.png?resizew=511)
(1)如图1,在“对角互余四边形”
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ec545eaa6dac6daac6e810315a7d633.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a3af1ba1ab0bb79d29c50472f99487b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)如图2,在四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22fe309928b35b06e206780a53a9c297.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(3)在(2)的条件下,如图3,已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56df3ed43bb3087c83b048ce611a63ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abb3c143721938422cde08e0690fac88.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
名校
【推荐3】如图1,对角线互相垂直的四边形叫做垂美四边形.
(2)性质探究:如图1,垂美四边形ABCD的对角线AC,BD交于点O.AB2,CD2,AD2,BC2的关系是________.
(3)解决问题:如图3,分别以Rt△ACB的直角边AC和斜边AB为边向外作正方形ACFG和正方形ABDE,连结CE,BG,GE.已知AC=4,AB=5,求GE的长.(可直接利用(2)中的结论)
(2)性质探究:如图1,垂美四边形ABCD的对角线AC,BD交于点O.AB2,CD2,AD2,BC2的关系是________.
(3)解决问题:如图3,分别以Rt△ACB的直角边AC和斜边AB为边向外作正方形ACFG和正方形ABDE,连结CE,BG,GE.已知AC=4,AB=5,求GE的长.(可直接利用(2)中的结论)
您最近一年使用:0次