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congruent (SS)
Author:
Ricky Chan
GeoGebra
New Resources
異分母分數減法
兩位數除以一位數（一）
球体的体积推导
球体的体积推导（优化版）
四邊形的特性
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习题，任意三点不在同一直线上的等四个点，最多能作出几个三角形
二次曲線-1.圓錐曲線
指數與對數
gjh-g03-00 和的平方公式的副本
Addition and Subtraction of Directed Numbers (2)
Discover Topics
Dilation
Random Experiments
Matrices
Continuity
Statistics