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三角函数线
Author:
冯伟冀
Topic:
Trigonometry
GeoGebra
New Resources
四邉形 (四年級) 教師版
三位數除以一位數（二）
異分母分數減法
拼砌四邊形
找出對稱軸
Discover Resources
長方形與正方形的面積
test
Copy of 正方体展开图
銳角三角：tan
一道三视图的题目（三视图作法参考）
Discover Topics
Subtraction
Dilation
Arithmetic
Stochastic Process or Random Process
Coordinates