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題五
Author:
Tse Sir
GeoGebra
New Resources
異分母分數減法
兩位數除以一位數（一）
兩組對邊相等的四邊形
四邉形 (四年級) 教師版
球體建築師
Discover Resources
JAY三角
hint
Clock Simulation
正立方體的截痕
垂心
Discover Topics
Arithmetic Operations
Random Variables
Geometric Mean
Combinatorics
Trigonometry