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62326 劉虹圻
Author:
呂麗珠
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
球体的体积推导（优化版）
兩位數加法
第八周作业
拼砌四邊形
Discover Resources
waaachen
等腰三角形 － 等角對等邊
Demo
眼睛的毛病(近視及遠視)
圓和弦圓和弦的副本
Discover Topics
Tree Diagrams
Indefinite Integral
Integers
Trigonometric Functions
Orthocenter