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周界4B (1)
Author:
jonicarmen
GeoGebra
New Resources
兩位數加法
【案例】2018年全国1卷理科12题
球体的体积推导
異分母分數減法
球体的体积推导（优化版）
Discover Resources
Area of Trapezium
Rectangle
angles sum of a triangle 2
三年級除法(一)：一位數除兩位數
多平面鏡反射成像
Discover Topics
Numbers
Functions
Square
Curve Sketching
Optimization Problems