如图,
是半圆
的直径,
的垂直平分线交半圆
于点
,垂足为
.点
为
上一点,过点
的切线交
的延长线于点
,连接
交
于点
,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/7/629afbde-a217-4b08-a2fb-46d440b67da3.jpg?resizew=266)
(1)如图①,求证:
;
(2)如图②,当点
是
的中点时,连接
.
①
的度数为______度;
②若
,求四边形
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b19c646bcb6160197fdf12a9cb31a0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cad4595d5352b2884568a59d8d766a4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/7/629afbde-a217-4b08-a2fb-46d440b67da3.jpg?resizew=266)
(1)如图①,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047eba5bba202f75349f94ad9feb4962.png)
(2)如图②,当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b19c646bcb6160197fdf12a9cb31a0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce9921210606abee3c0ad7ea73ae251b.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/418ebb89d29f4f631b055c911e8d178a.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fa61f314be58baeed41c498c876121d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e314be396489ac5c98f28139308aec61.png)
更新时间:2024-04-07 08:22:34
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