在矩形ABCD中,对角线AC,BD交于点O,且∠AOD=120°.若AB=3,则BC的长为( )
A.![]() | B.3 | C.![]() | D.6 |
20-21八年级下·江西赣州·期中 查看更多[9]
江西省赣州市会昌县2020-2021学年八年级下学期期中数学试题北京市和平街一中2020-2021学年八年级下学期期中考试数学试题河北省保定市易县2021-2022学年八年级下学期期中数学试题北京市朝阳区第八十中学2021-2022学年八年级下学期期末数学试题 广东 省广州市花都区花东镇大塘初级中学2021-2022学年八年级下学期期中考试数学试题 江西省赣州市会昌县周田中学2022-2023学年八年级下学期期中数学试题(已下线)2022-2023学年八年级数学下学期期末模拟预测卷03(原卷版)(已下线)YHmlsjsxRJ816.pdf江苏省南通市启东市江中学2023-2024学年八年级下学期3月月考数学试题
更新时间:2022-01-25 14:05:06
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【推荐1】如图,平行四边形
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【推荐1】如图,AB是⊙O的直径,弦CD⊥AB于点E,且E为OB的中点,∠CDB=30°,CD=4
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【推荐2】如图,C为线段AE上一动点(不与点A,E重合),在AE同侧分别作正三角形ABC和等边三角形CDE,AD与BE交于点O,AD与BC交于点P,BE与CD交于点Q,连结PQ.以下结论正确的有 ( )个:
①PQ∥AE ②AP=BQ ③∠AOB=60° ④CP=CQ ⑤连接OC,则OC平分∠AOE
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①PQ∥AE ②AP=BQ ③∠AOB=60° ④CP=CQ ⑤连接OC,则OC平分∠AOE
![](https://img.xkw.com/dksih/QBM/2016/2/15/1573966989000704/1573966995218432/STEM/f0dec1a909984ad5851c5ccb012b8dc6.png)
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【推荐1】如图,将
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C.菱形的对角线互相垂直且每一条对角线平分一组对角 |
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