如图,某公园有一块四边形空地
,公园管理处计划在四边形
区域内种植草坪,
处修一条小路.已知
米,
米,
米,
,求四边形
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](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/fc34db5860990e51ba31edc8cdd077c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4e01e155b788c92c0f43e3f5951fb3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/975645d6a73a7326974511ca80b37f8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d9142db4dd2ef151bf3d4a63afb61e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/24/d1014bdd-42b9-4a13-81fa-b2f461040c1d.jpg?resizew=156)
更新时间:2024-01-25 06:03:40
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【推荐1】如图是一个滑梯示意图,若将滑梯
水平放置,则刚好与DE一样长,已知滑梯的高度
为3米,
为1米.
的长度;
(2)若把滑梯
改成滑梯
,使
,则求出
的长.(精确到0.1米,参考数据:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
(2)若把滑梯
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/639513e6a860d3972c2c172e9af647a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47bb3f35e3db7c1f3a3dd3eb20151b5f.png)
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【推荐2】如图,在平行四边形
中,对角线
相交于点O,E、F是对角线
上的两点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/1/89b72986-1688-42d2-b7ee-4dd97ed308f4.png?resizew=146)
(1)求证:四边形
是平行四边形;
(2)当
时,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/989c75a3fd02e4971cab421c88de92f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ce1475f537b4ad21775bfaa16daa0c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/1/89b72986-1688-42d2-b7ee-4dd97ed308f4.png?resizew=146)
(1)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2330c01a4d2b5b20f106e3e48834d5c0.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b46acc4f7b8af045ac554eeb52af3581.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
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【推荐1】学校正在增加绿化区域,种植花草树木,提高校园的绿化覆盖率,准备在四边形的空地上种植花卉,如图所示,
,
,
,
,
,求四边形
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/940d534d456af582b190ee143a8563e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c6cafe349668300db0f981a25f93ab3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb936922a24baac82a1d645c54743f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c72c70c8ea7bdc7a63fe262155e40526.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/15/a97d6429-3ade-4bd2-be43-8cf96e53820a.png?resizew=200)
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【推荐2】如图,在四边形
中,
,
的面积为
,
,
,
.
![](https://img.xkw.com/dksih/QBM/2020/4/27/2450609696260096/2453252718944257/STEM/16a6bddfd4b94a0e80f1d3d076d4c5cd.png?resizew=224)
(1)试判断
的形状;
(2)求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bf10d92f20501e19d25f6f4159aab89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbced129627233661d88e9663a9e13c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfebbb179bfa3ab1cff44df872abb259.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a464649f6f07afb0f1ec516c99b2f7b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d92d5d2adfe12d5edd03e038c0b4e3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d8b79e8117dbbe73418dce43aa08ba4.png)
![](https://img.xkw.com/dksih/QBM/2020/4/27/2450609696260096/2453252718944257/STEM/16a6bddfd4b94a0e80f1d3d076d4c5cd.png?resizew=224)
(1)试判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
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