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穿越球
Author:
李乘舟
Topic:
Surface
GeoGebra
New Resources
長方體平面投影 (Codex版)
算柱 (兩位數)
兩組對邊相等的四邊形
畫出對稱圖形
sanjiaohanshu
Discover Resources
ppppp
正n邊形的組合
test1(尋找北極星)
HKDSE 2015 by Mr LO WY
剪切成正三棱柱（制作：李三军，修订：孟宝兴）
Discover Topics
LCM and GCD
Unit Circle
Congruence
Median Line
Integral Calculus