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初二奥数：全等三角形
Author:
王俊辉
初二奥数：全等三角形
GeoGebra
New Resources
找出對稱軸
直角坐標平面上的旋轉變換
三位數除以一位數（一）
異分母分數減法
兩組對邊相等的四邊形
Discover Resources
Ray tracing
腳踏車輪圈
自我練習
平面幾何
angle between 2 planes 01 by Mr LO WY
Discover Topics
Unit Circle
Correlation
Root
Natural Numbers
Quadratic Functions