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量角器
Author:
lahok.kolas
GeoGebra
New Resources
拼砌四邊形
GeoGebra笔记功能体验课件
兩組對邊相等的四邊形
球體建築師
兩位數加法
Discover Resources
範例：畫圈圈的筆
rectangle construction
任何三角形內角和180度(五上數翰４－２)
test
同心六邊形
Discover Topics
Cosine
Functions
Trigonometry
Translation
Conditional Probability