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折射的現象
Author:
Jia-ming Shiu
拉動G，看出虛擬呈現
GeoGebra
New Resources
三位數除以一位數（一）
兩組對邊相等的四邊形
四邊形的特性
找出對稱軸
異分母分數減法
Discover Resources
perimeter
指對數函數交點分析
長方形面積法 _單項式乘法
內心
椭圆的光学性质
Discover Topics
Cuboid
Integers
Inequalities
Vectors 3D (Three-Dimensional)
General Quadrilateral