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翻轉方塊(單開)
Author:
Lin Ching Chieh
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
找出對稱軸
四邉形 (四年級) 教師版
異分母分數減法
畫出對稱圖形
Discover Resources
題三
垂線作圖
堆四顆球
第一次尝试
两圆上两动点分别以相同的线速度运动时，连线中点的轨迹（绿色花朵）
Discover Topics
Angles
LCM and GCD
Special Points
Random Experiments
Probability