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直角三角形的三角比
Author:
+x sir
GeoGebra
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柱體建築師
【案例】圆柱体内放置一个大球六个小球
判斷球體
兩組對邊相等和有直角的四邊形
算柱 (兩位數)
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類尺規作圖
根據百分率找數量（一）:例1
多邊形與圓_2
同心六邊形
常用對數
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Distributions
Quadratic Functions
Subtraction
Geometry
Planes