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线面平行的判定及性质定理
Author:
彭宽仁
GeoGebra
New Resources
球体的体积推导（优化版）
四邊形的特性
球体的体积推导
【案例】2018年全国1卷理科12题
兩組對邊相等和有直角的四邊形
Discover Resources
Lagrange
Klein Bottle
最簡分數
Angles in pyramid
微積分基本定理的副本
Discover Topics
Vectors 3D (Three-Dimensional)
Geometric Distribution
Expected Value
Integers
Set Theory