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探索三角形外角定理
Author:
Gideon Huang
1. 鍵入或拖曳角A的度數。 2. 拖曳B點和C點,試觀察規律。 3. 重複1~2,你發現什麼?
GeoGebra
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四邊形的特性
小数 的副本
拼砌四邊形
Nested spiral octagon
sanjiaohanshu
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拋物線作圖Ex1
整數÷整數_工作紙(一)_題3
正六面體展開圖
古典概型
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Arithmetic Operations
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