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指數_1
Author:
陳柄何
GeoGebra
New Resources
兩位數除以一位數（一）
兩組對邊相等和有直角的四邊形
找出對稱軸
判斷球體
兩組對邊相等的四邊形
Discover Resources
正多邊形滾動
座標軸工具
以「時」和「分」報時
example
angle in semi-circle
Discover Topics
Sequences and Series
Algebra
Vectors 2D (Two-Dimensional)
Optimization Problems
Diagrams