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「相似三角形」任务3的副本
Author:
jinwen
,
gklwong
Topic:
Similar Triangles
任务3
GeoGebra
New Resources
拼砌四邊形
兩位數加法
球体的体积推导（优化版）
判斷球體
找出對稱軸
Discover Resources
彈道
底數介於0到1之間指對數函數交點情形
test
對稱之美
拋物線4--焦點法
Discover Topics
Upper and Lower Sum or Riemann Sum
Percentages
Arithmetic Mean
Rotation
Cone