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固定面積的圖形周界變化
Author:
GeoGebra Institute of Hong Kong
Topic:
Area
,
Perimeter
,
Square
GeoGebra
New Resources
柱體建築師
畫出對稱圖形
兩位數加法
兩位數除以一位數（一）
判斷球體
Discover Resources
弦心距垂直平分弦
Math
日照杆影演示
S3 Ch4.1 正四面體的反射平面
直线过定点问题(1)
Discover Topics
Natural Numbers
Continuity
Division
Cone
Orthocenter