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Ex5C#15
Author:
Big Lee
GeoGebra
New Resources
近似值：有效數字
兩位數加法
異分母分數減法
柱體建築師
兩位數除以一位數（一）
Discover Resources
拿破崙三角形
三角形的高與面積
S5 Permutation and Combination
軌跡觀察---兩軸上的固定長定點軌跡
rotational symmetry_2
Discover Topics
Distributions
Random Variables
Hyperbola
Subtraction
Optimization Problems