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F3 Ch9.3 羅盤方位角
Author:
Li Woon Chung
Topic:
Trigonometry
GeoGebra
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錐體建築師
找出對稱軸
柱體建築師
球体的体积推导
球体的体积推导（优化版）
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商高定理2
parallelogram
正切與餘切函數
三節棍
△ A B E △ABE 、 △ A C E △ACE 的內切圓半徑分別為 r 2與 r 1,兩者 可以互換嗎
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Similar Triangles
Boxplot
Intersection
Cosine
Planes