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笛卡兒之心
Author:
陳隆期
GeoGebra
New Resources
算柱 (兩位數)
拼砌四邊形
兩位數加法
兩組對邊相等和有直角的四邊形
三位數除以一位數（一）
Discover Resources
彈幕模擬
GGB DAY3
劉徽的「割圓術」
箭头平移动画
廣義角的副本
Discover Topics
Parallelogram
Distributions
Curve Sketching
Conditional Probability
Solids or 3D Shapes