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龜甲
Author:
呂麗珠
GeoGebra
New Resources
算柱 (兩位數)
兩組對邊相等和有直角的四邊形
四邉形 (四年級) 教師版
找出對稱軸
畫出對稱圖形
Discover Resources
三角形內角和
幾何變換
長方形
鏡射的副本
动感数学
Discover Topics
Ratios
Area
Tangent Function
Mode
Integers