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测玻璃砖的折射率
Author:
红牛
Topic:
Trigonometric Functions
,
Trigonometry
测玻璃砖的折射率
GeoGebra
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兩組對邊相等和有直角的四邊形
找出對稱軸
三位數除以一位數（一）
兩組對邊相等的四邊形
錐體建築師
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跑馬燈
分數減法
堆垛系列
Copy of 拼圖遊戲
褶正三角形
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Standard Deviation
Quadrilaterals
Area
Inequalities
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