1 . 下面是小芳同学设计的“过直线外一点作这条直线的垂线”的尺规作图过程.
及直线
外一点P.
求作:直线
的垂线,使它经过点P.
作法:
①以P为圆心,大于P到直线l的距离为半径作弧,交直线l于A,B两点:
②连接
和
;
③作
的角平分线
,交直线l于点Q;
④作直线
.
∴直线
就是所求的直线.
根据小芳设计的尺规作图过程,解答下列问题:
(1)使用直尺和圆规,补全图(保留作图痕迹);
(2)写出证明过程和依据.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
求作:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
作法:
①以P为圆心,大于P到直线l的距离为半径作弧,交直线l于A,B两点:
②连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e61620a272dada8d4b9a9fab6379dfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30513ea48bc1ef3ae78adac83d894f14.png)
③作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb686e4f5e3938575bc547e849d5513f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
④作直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
∴直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
根据小芳设计的尺规作图过程,解答下列问题:
(1)使用直尺和圆规,补全图(保留作图痕迹);
(2)写出证明过程和依据.
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2 . 已知四边形
为正方形,点
在
边上,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/27/5304c09c-d09f-4b43-a038-0f42d4ac1650.png?resizew=113)
(1)尺规作图:过点
作
于点
,交
于点
(保留作图痕迹,不写作法,不下结论);
(2)求证:
.(请补全下面的证明过程)
证明:∵正方形
,
∴
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6217ba54baf35aca59d9b89ded7367e.png)
________
,
∴
,
∵
,
∴
,
∴
,
∴
________,
在
与
中
,
( )里填________
∴
(
),
∴
.
通过上面的操作,进一步探究得到这样的结论:两端点在正方形的一组对边上且
______的线段长相等.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/27/5304c09c-d09f-4b43-a038-0f42d4ac1650.png?resizew=113)
(1)尺规作图:过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb91cb9a5a14169845d700fbd95890ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04f8eebda19eded2b059774a8c2666c3.png)
证明:∵正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3570a95f68349fcd9417fcda62e78e7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6217ba54baf35aca59d9b89ded7367e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e1c9ae241fd78126274c65e17990c88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0c06422e1d55db3077257af113df4bb.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4500c083ce75a99fd640c3067e600d9.png)
∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb91cb9a5a14169845d700fbd95890ac.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17d2242e660785814aa933b93ea28a0e.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdf65f2f3f02118a8956c76ba9f55fae.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c650fe55b7603f106c53ca2423451c6.png)
在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6830ebecddbd9759be626289c408e4f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62d1f23c643b53965a5beb8200354397.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b3be9504b4d7f24528377970a5aa198.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/922514832587986f60a0a3fa4ec3ca0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4351a730f61bb998bab8f0b7848912d7.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04f8eebda19eded2b059774a8c2666c3.png)
通过上面的操作,进一步探究得到这样的结论:两端点在正方形的一组对边上且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d8b8edd94bc4d5d517ec77e56800e41.png)
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3 . 如图,在四边形
中,
,
,
上截取
,作
交
于点F;
(保留作图痕迹,不写作法)
(2)在(1)所作图形中,求证:
(请补全下面的证明过程,不写证明理由)
证明:∵![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
∴ ①![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4df89e372474c87ac158a7b8f22e27b8.png)
∵![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0095edf048d91dc2910056a866febb5a.png)
∴ ②
∴ ③
∴四边形
为平行四边形
∵![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29ee224ad0d3ac27adcc7c4d7684fe78.png)
∴ ④
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deb6694f3443cc5f4d09948679251b61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3620030e8808da46df97330103827913.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0095edf048d91dc2910056a866febb5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(保留作图痕迹,不写作法)
(2)在(1)所作图形中,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efbc0e76b7abb656327bdc97226713e1.png)
证明:∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
∴ ①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4df89e372474c87ac158a7b8f22e27b8.png)
∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0095edf048d91dc2910056a866febb5a.png)
∴ ②
∴ ③
∴四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18d5a164bf56f8fb92527ad78bc10ccf.png)
∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29ee224ad0d3ac27adcc7c4d7684fe78.png)
∴ ④
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efbc0e76b7abb656327bdc97226713e1.png)
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4 . 下面是小李设计的“过圆外一点作圆的一条切线”的尺规作图的过程.
已知:如图1,
及圆外一点P.
求作:过点P作
的一条切线.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/13/c579cb70-8eae-4896-b829-488557732639.png?resizew=205)
作法:①连接
;
②作
的垂直平分线,交
于点A;
③以A为圆心,
的长为半径作弧,交
于点B;
④作直线
.
即直线
为所求作的一条切线.
根据上述尺规作图的过程,回答以下问题:
(1)使用直尺和圆规,依作法补全图形(保留作图痕迹);
(2)该作图中,可以得到
______
;依据:____________.
已知:如图1,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
求作:过点P作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/13/c579cb70-8eae-4896-b829-488557732639.png?resizew=205)
作法:①连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
②作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
③以A为圆心,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
④作直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
即直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
根据上述尺规作图的过程,回答以下问题:
(1)使用直尺和圆规,依作法补全图形(保留作图痕迹);
(2)该作图中,可以得到
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f3d1fcc7dfe5820e30c7d8109c36e86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83873a9d782f2588c5eedbfe73f9bc2f.png)
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5 . 已知:和圆外一点
,求作:过点
的
的切线.
作法:①作射线,交
于点
,
;
②以为圆心,
为半径作
,以
为圆心,
的长为半径画弧交
于点
;
③连接,
,
交
于点
;
④作直线.
所以直线为
的切线.
(1)使用直尺和圆规进行尺规作图,依作法补全图形(保留作图痕迹);
(2)完成下面的证明.
证明:,
,
.
,
.
填推理的依据
半径
.
直线
为
的切线.( )(填推理的依据)
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6 . 下面是小方设计的“作等边三角形”的尺规作图过程.
已知:线段
.
求作:等边三角形
.
作法:如图,
①以点A为圆心,以
的长为半径作
;
②以点B为圆心,以
的长为半径作
,交
于C;
③连接
.
所以
就是所求作的三角形.
(1)使用直尺和圆规,补全图形(保留作图痕迹);
(2)完成下面的证明.
证明:∵点B,C在
上,
∴
(_____________)(填推理的依据).
同理∵点A,C在
上,
∴
.
∴______=_______=_______.
∴
是等边三角形.(_____________)(填推理的依据).
已知:线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
求作:等边三角形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
作法:如图,
①以点A为圆心,以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c20d0b44025a639ce3a92d639dae587.png)
②以点B为圆心,以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6f6558fef858bf27e9811c2d9426fe7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c20d0b44025a639ce3a92d639dae587.png)
③连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5345f892125374809bcaaab5da8d3f5f.png)
所以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(1)使用直尺和圆规,补全图形(保留作图痕迹);
(2)完成下面的证明.
证明:∵点B,C在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c20d0b44025a639ce3a92d639dae587.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
同理∵点A,C在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6f6558fef858bf27e9811c2d9426fe7.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3570a95f68349fcd9417fcda62e78e7e.png)
∴______=_______=_______.
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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7 . 如图,已知线段
,且
,求作矩形
.小明的作法如下:①以A为圆心,
长为半径画弧;②以C为圆心,
长为半径画弧;③两弧交于点D,连接
.于是就作出了矩形
.
(2)补全下述证明过程:
∵
,______.
∴四边形
是平行四边形.
又∵ ,
∴平行四边形
是矩形.(_______)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4515e1dff9a852b3294dc1d6488a5748.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/d7e545f31f7cc57a31843f5adfd02941.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)补全下述证明过程:
∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c220eadc312101e2fb89dfe920f7b30d.png)
∴四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
又∵ ,
∴平行四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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8 . 如图,在
中,
是对角线.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/26/7e1b24fe-797b-4a55-933c-1c1acfe399ed.png?resizew=182)
(1)尺规作图:作线段
的垂直平分线
,分别交
、
、
于点
、
、
,连接
和
(用尺规作图,并在图中标明相应的字母,保留作图痕迹);
(2)在(1)的条件下,求证四边形
是菱形(请补全下面的证明过程,将答案写在答题卡对应的番号后).
证明:∵
垂直平分
,
∴
.
又∵四边形
是平行四边形,
∴①________
∴
.
在
和
中,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb286a47dbde46677a8619f548d5c151.png)
②________
∴
,
∴③________
∵
垂直平分
,
∴
,④________
∴
,
∴四边形
是菱形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5138a9f70d5e8b0580e30fef6eb7baef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/26/7e1b24fe-797b-4a55-933c-1c1acfe399ed.png?resizew=182)
(1)尺规作图:作线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
(2)在(1)的条件下,求证四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8bdae3d30abf70515bdbd45f9d0c380.png)
证明:∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b9ea68dbddf33f0fed8f35a1fd5c90b.png)
又∵四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
∴①________
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf6e5c05ccd9a271f2f253a053502615.png)
在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20c525358262126a51fbb598d58f3e1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74625390340982140e449e07663579a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb286a47dbde46677a8619f548d5c151.png)
②________
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78a49fc8b7061e74c854ae12908a95b0.png)
∴③________
∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba11242dcc61d3c7c3555b598b5fdc89.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/671eab9d0b5621d93972b7e62b816766.png)
∴四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8bdae3d30abf70515bdbd45f9d0c380.png)
您最近一年使用:0次
名校
9 . 乐乐发现,任意一个直角三角形都可以分割成两个等腰三角形,已知:在中,
.
求作:直线,使得直线
将
分割成两个等腰三角形.
下面是乐乐设计的尺规作图过程.
作法:如图,①作直角边的垂直平分线
,与斜边
相交于点
;
②作直线. 所以直线
就是所求作的直线.
根据乐乐设计的尺规作图过程,解决下列问题:
(1)使用直尺和圆规,补全图形(保留作图痕迹);
(2)证明直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
10 . 如图,
,射线
与
交于点
,射线
与
交于点
.若
是
的角平分线,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/15/9c89ede3-b244-4a8c-921c-f678ff6cf3da.png?resizew=112)
(1)尺规作图:在射线
上作
,并连接
(不写作法,保留作图痕迹);
(2)试说明
,请补全证明过程,即在横线处填上结论或理由.
证明:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16f3d198e76391779fa3badc848c8ac8.png)
(已知)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
(两直线平行,内错角相等)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16f3d198e76391779fa3badc848c8ac8.png)
是
的角平分线(已知)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
(等量代换)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16f3d198e76391779fa3badc848c8ac8.png)
(已知)
(同旁内角互补,两直线平行)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
(等量代换)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/060705794ef87cc71dac40c57f27b1d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/046205ea7085fe0f2813a7cee9624560.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/15/9c89ede3-b244-4a8c-921c-f678ff6cf3da.png?resizew=112)
(1)尺规作图:在射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c780c8f43ce63266571994c756e6b0bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
(2)试说明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dacee823cab6170d4899a137a593a3d.png)
证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16f3d198e76391779fa3badc848c8ac8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c0c46783b77cce2bd4b45b9acc61884.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16f3d198e76391779fa3badc848c8ac8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/060705794ef87cc71dac40c57f27b1d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34398f6ca9e8526b1cf82afef62406ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b7960538cb70fcf641b94864a90190d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16f3d198e76391779fa3badc848c8ac8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/046205ea7085fe0f2813a7cee9624560.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1beff025b32f688316009552d2fd8e1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dacee823cab6170d4899a137a593a3d.png)
您最近一年使用:0次