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特製的門
Author:
李春培
特製的門
https://www.facebook.com/video.php?v=730160733696759&fref=nf
GeoGebra
New Resources
畫出對稱圖形
兩組對邊相等的四邊形
長方體平面投影 (Codex版)
算柱 (兩位數)
小数 的副本
Discover Resources
複合圖形(一)
角平分線性質
三角排列
數學素養試題
刘校安排（1）
Discover Topics
Logarithmic Functions
Variance
Dilation
Geometric Distribution
Equilateral Triangles