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11-18的加減組合
Author:
Yin Kelvin Wong
GeoGebra
New Resources
兩組對邊相等的四邊形
三位數除以一位數（二）
小数 的副本
【案例】2018年全国1卷理科12题
兩位數加法
Discover Resources
T5 Geobra
Angle in Alternate Segment 3
不規則圖形的周界(intro)
Angle between 2 planes
分數乘法方塊
Discover Topics
Algebra
Constructions
Optimization Problems
Complex Numbers
Real Numbers