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中考 2019 顺义一模-25
Author:
acchu
GeoGebra
New Resources
常见四边形是否是双心四边形
圓的基本性質
球体的体积推导
圓周公式的應用
球体的体积推导（优化版）
Discover Resources
ggbbook1
Quiz on True Bearings 真方位角：測驗
Copy of 固定面積的圖形的周界變化
真分數乘以真分數
幾何作圖動畫示範的副本
Discover Topics
Centroid or Barycenter
Area
Arithmetic Operations
Mathematics
Triangles