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最長與最短的弦
Author:
簡士峻
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
兩位數加法
三位數除以一位數（一）
錐體建築師
【案例】圆柱体内放置一个大球六个小球
Discover Resources
表面積
Translation, Reflection and Rotation
地球20160328
直線與圓(直線方程式圖形特性1)
直角
Discover Topics
Arithmetic Operations
Coordinates
Distributions
Similarity Transformation or Similarity
Step Functions