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數量與整體的相差百分率
Author:
GeoGebra Institute of Hong Kong
Topic:
Percentages
GeoGebra
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折扣
多邊形的面積
龙形曲线-分形龙
双心四边形
平行線的斜率
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高中選修-數學(甲)2-3積分的意義-黎曼和
線性組合性質
函数积分
三角形面積公式 1/2 bc sinA的副本
纏繞畫2
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Root
Geometric Transformations
Sine
Coordinates
General Quadrilateral