找出图形变化的规律,则第2020个图形中黑色正方形的数量是( )
![](https://img.xkw.com/dksih/QBM/2022/9/25/3073883471642624/3074807295369216/STEM/1775c72094674b608947e30612b92060.png?resizew=550)
![](https://img.xkw.com/dksih/QBM/2022/9/25/3073883471642624/3074807295369216/STEM/1775c72094674b608947e30612b92060.png?resizew=550)
A.2019 | B.2020 | C.3029 | D.3030 |
19-20七年级上·江苏连云港·期末 查看更多[8]
江苏省连云港外国语学校2019-2020学年七年级上期末数学试题江苏省连云港市海州区2019-2020学年七年级上学期期末数学试题四川省成都市树德中学2020-2021学年七年级上学期期中数学试题广东省潮州市2020-2021学年七年级上学期期末数学试题贵州市遵义市新蒲新区2020-2021学年七年级上学期期末数学试题(已下线)七年级数学上学期【第一次月考卷】(测试范围:第1~2章)-2022-2023学年七年级数学上学期考试满分全攻略(苏科版)安徽省安庆市怀宁县2020-2021学年七年级上学期期中考试数学试题江苏省无锡市江阴市青阳初级中学2022-2023学年七年级上学期10月月考数学试题
更新时间:2022-09-28 14:44:51
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【推荐1】如图,是用黑棋拼成的图形,其中第①个图案中有3颗黑棋,第②个图案中有5颗黑棋,第③个图案中有7颗黑棋,…,按此规律排列下去,则第⑦个图形需( )颗黑棋.
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A.13 | B.14 | C.15 | D.17 |
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【推荐2】如图,四边形ABCD是边长为
的正方形,曲线
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A.![]() | B.![]() | C.![]() | D.![]() |
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