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Author:
葉天宏
GeoGebra
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兩組對邊相等和有直角的四邊形
GeoGebra笔记功能体验课件
柱體建築師
三位數除以一位數（二）
兩位數除以一位數（一）
Discover Resources
龍騰4_1-1課例3
傅立葉級數
對稱圖形
vertex of quadratic function
褶正三角形
Discover Topics
Similarity Transformation or Similarity
Secant Line or Secant
Trapezoid
Terms
Definite Integral