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折扣 例5的副本
Author:
冯圣军
,
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
四邉形 (四年級) 教師版
三位數除以一位數（二）
球體建築師
找出對稱軸
四邊形的特性
Discover Resources
Circumcentre
同學最喜愛的運動
二次函數01
拋物線3--平行四邊形法
橢圓2--四圓心近似法
Discover Topics
Geometry
Distributions
Trapezoid
Polynomial Functions
Straight Lines