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七巧板
Author:
Tse Sir
GeoGebra
New Resources
兩位數除以一位數(一)
兩位數加法
算柱 (兩位數)
兩組對邊相等和有直角的四邊形
三位數除以一位數(二)
Discover Resources
閱讀鐘面及數字鐘(時和分)
sym1
折線軌跡
同位角---不平行綫
定积分中的二次函数曲边三角形面积.许兴华数学
Discover Topics
Curve Sketching
Line Segment
Triangles
Similarity Transformation or Similarity
Orthocenter