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陳人瑜proof81
Author:
郭亮偉
GeoGebra
New Resources
算柱 (兩位數)
拼砌四邊形
三位數除以一位數(二)
異分母分數減法
【案例】2013年安徽高考15题
Discover Resources
Proof of Pythagoras Theorem(1) 畢氏定理的証明(1)
立體圖形的反射對稱
圆锥曲线
运动的全等三角形.许兴华数学
序列(圆内弦)
Discover Topics
Quadratic Functions
Arithmetic
Ratios
Arithmetic Operations
Perimeter