将图中的树叶沿虚线剪掉一部分,发现剩下的树叶的周长比原来的周长要小,能正确解释这一现象的数学道理是______ .
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/6/1cc4722b-98b9-4500-ba36-f766c4ced5bb.png?resizew=138)
更新时间:2020-12-16 10:57:31
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