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Projection
Author:
Jia-ming Shiu
Projection
GeoGebra
New Resources
四邉形 (四年級) 教師版
兩組對邊相等的四邊形
【案例】2018年全国1卷理科12题
異分母分數減法
三位數除以一位數（一）
Discover Resources
固定三角形的條件−題5
gjh-g03-01 和的平方公式
Copy of 長方形與正方形的面積
對稱(LEVEL 1)
凸透镜成像
Discover Topics
Arithmetic Operations
Vectors 2D (Two-Dimensional)
Arithmetic Mean
Median Line
Calculus