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平行四边形变形
Author:
dhc987
GeoGebra
New Resources
球体的体积推导（优化版）
兩組對邊相等的四邊形
第八周作业
拼砌四邊形
【案例】2018年全国1卷理科12题
Discover Resources
正弦定理的验证
線對稱圖形
二項分佈的副本
极值点方式求圆心
科氏力 (Coriolis Force)
Discover Topics
Matrices
Tree Diagrams
Geometric Mean
Cosine
Square