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旋轉長方形
Author:
h6741957g
GeoGebra
New Resources
兩位數加法
三位數除以一位數（一）
畫出對稱圖形
找出對稱軸
兩組對邊相等的四邊形
Discover Resources
IQ 波形合成圖
填色
四邊形面積問題
Epicycloid
圆锥曲线的统一画法.许兴华数学
Discover Topics
Standard Deviation
Random Experiments
Polygons
Orthocenter
Linear Equations