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軌跡教學
Author:
yuchengda
GeoGebra
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異分母分數減法
兩位數除以一位數（一）
兩組對邊相等的四邊形
畫出對稱圖形
兩組對邊相等和有直角的四邊形
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時鐘與數學
正三角形
圓相切
正多角柱(可輸入底面邊數)
圓周_心算題01
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Random Experiments
Optimization Problems
Root
Polynomial Functions
Diagrams