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ie 8
Author:
LAM YU SANG
GeoGebra
New Resources
兩位數加法
兩組對邊相等和有直角的四邊形
異分母分數減法
兩位數除以一位數（一）
判斷球體
Discover Resources
旋轉體 (Disk Method)
Reference Angle 參考角
test
B6 二次函數
線性規劃
Discover Topics
Prism
Integers
Conic Sections
Multiplication
Circle