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優良作品6
Author:
Ching-Hui Chou
GeoGebra
New Resources
兩組對邊相等的四邊形
兩組對邊相等和有直角的四邊形
柱體建築師
異分母分數減法
三位數除以一位數（二）
Discover Resources
S5 geometry
一道三视图的题目（三视图作法参考）
拋物線1--焦點法
線性變換對相關係數的影響
作线段和角
Discover Topics
Surface
Pie Chart or Circle Chart
Statistics
Expected Value
Circle