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综合（2）15.
Author:
Sylvie
GeoGebra
New Resources
四邉形 (四年級) 教師版
兩組對邊相等和有直角的四邊形
拼砌四邊形
兩組對邊相等的四邊形
找出對稱軸
Discover Resources
平面鏡成像 Image of Plane Mirror Reflection
[S3] a GeoGebra file created by a pre-service teacher Peter (pseudonym)
Example 5
計算圖形周界（小六下）
雙曲線3 等軸法
Discover Topics
Vectors 2D (Two-Dimensional)
Arithmetic Mean
Function Graph
Stochastic Process or Random Process
Polygons