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畢氏定理
Author:
Tzeng, Shyuh-yaur
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GeoGebra
New Resources
球體建築師
兩組對邊相等的四邊形
兩位數加法
異分母分數減法
算柱 (兩位數)
Discover Resources
正立方體變菱形12面體
水流問題(黑板)
三角函数线
对角线交点
元旦快乐（制作：孟宝兴）
Discover Topics
Terms
Pie Chart or Circle Chart
Calculus
Cosine
Straight Lines