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三圓外切
Author:
AlexWang
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
【案例】2018年全国1卷理科12题
拼砌四邊形
畫出對稱圖形
兩位數除以一位數（一）
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七巧板貓咪
橫斷式研究之樣本數估計（Outcome為odds ratio）
[問題] OP 最大投影長
圓與直線
金印的展开图
Discover Topics
Mode
Continuity
Step Functions
Combinatorics
Rhombus