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圓周率的應用 題1
Author:
wong wai man
,
Keith Ko
移動右圖中的紅線到左方虛線，就知道它是相等於左圖的哪條線。
GeoGebra
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四邊形的特性
小数 的副本
異分母分數減法
兩位數除以一位數（一）
找出對稱軸
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方格紙上畫正方形4
Square
maths
Angles formed by two straight lines and transversal
一个周期内的正弦曲线
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Pyramid
General Quadrilateral
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