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《2019 东城一模-25》
Author:
acchu
GeoGebra
New Resources
兩組對邊相等的四邊形
柱體建築師
算柱 (兩位數)
【案例】2018年全国1卷理科12题
球体的体积推导（优化版）
Discover Resources
圆锥曲线的第二定义
圓周 (圖形E)
五位數
試算表應用
長方形的周界與長和闊的關係 (教師版)
Discover Topics
Natural Numbers
Differential Calculus
Vectors 2D (Two-Dimensional)
Tangent Line or Tangent
Set Theory