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连续开方（制作：谢建华，修订：孟宝兴）
Author:
孟宝兴
GeoGebra
New Resources
兩位數除以一位數（一）
柱體建築師
兩組對邊相等的四邊形
第八周作业
兩位數除以一位數（二）
Discover Resources
F.3 Ch.10 Application of Trigonometry
过圆上一点作切线，三步
Dizzy (Just for Fun)
B4 4-1 平行線性質
tytyty
Discover Topics
Angles
Trigonometric Functions
Translation
General Quadrilateral
Similarity Transformation or Similarity