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銳角三角函數
Author:
羅驥韡 (Pegasus Roe)
Topic:
Trigonometric Functions
GeoGebra
New Resources
兩位數除以一位數（二）
球體建築師
四邉形 (四年級) 教師版
兩組對邊相等和有直角的四邊形
球体的体积推导（优化版）
Discover Resources
正n多邊形面積逼近圓面積
線段前後分割
認識直徑
v型咖啡濾網
金印的展开图
Discover Topics
Conditional Probability
Expected Value
Quadrilaterals
Quadratic Equations
Sphere