如图,在矩形
中,
,
,以点B为圆心、BC的长为半径画弧交AD于点E,再分别以点C,E为圆心、大于
的长为半径画弧,两弧交于点F,作射线BF交CD于点G,则CG的长为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7788830ed1cb3b9c5988f70f43595f2e.png)
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21-22八年级下·辽宁大连·期末 查看更多[2]
辽宁省大连市中山区2021-2022学年八年级下学期期末数学试题(已下线)专题1.18 特殊平行四边形(中考常考考点分类专题)(基础练)-2023-2024学年九年级数学上册基础知识专项突破讲与练(北师大版)
更新时间:2022-08-30 17:38:34
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【推荐1】如图,已知
,以点
为圆心,以适当长度为半径画弧,分别交
,
于点
,
,再分别以点
,
为圆心,大于
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【推荐2】如图,在四边形
中,
,
,
.按下列步骤作图:①以点
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于
,
两点;②分别以点
,
为圆心以大于
的长为半径画弧,两弧交于点
;③连接
并延长交
于点
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的长是________ .
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【推荐2】如图,在⊙O中,AB是直径,弦BE的垂直平分线交⊙O于点C,CD⊥AB于D,AD=1,BE=6,则BD的长为__ .
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