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定长线段在相交直线上滑动
Author:
冯伟冀
GeoGebra
New Resources
找出對稱軸
兩組對邊相等和有直角的四邊形
三位數除以一位數(二)
第八周作业
兩位數除以一位數(二)
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Spotlight 探射燈
實驗與觀察
伸縮矩陣
外積分配律
線性規劃
向量分解的副本
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Unit Circle
Tree Diagrams
Linear Equations
Optimization Problems
Rhombus