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龍騰4_1-1課進7
Author:
廖傑成
GeoGebra
New Resources
兩位數除以一位數（一）
算柱 (兩位數)
柱體建築師
畫出對稱圖形
兩組對邊相等的四邊形
Discover Resources
翰林B4習p85_10
一元二次方程式-應用問題(兩圓相切-3)
平面向量的三點共線定理
sequence
单位圆画三角函数图像 李艾心
Discover Topics
Addition
Trigonometric Functions
Pythagoras or Pythagorean Theorem
Arithmetic Mean
Geometric Transformations