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蝴蝶公式
Author:
Gideon Huang
請拖曳A、B、C、D四點,觀察角A、角B、角C、角D的關係
GeoGebra
New Resources
兩組對邊相等的四邊形
三位數除以一位數(二)
兩位數加法
兩位數除以一位數(一)
画直线等分三角形的面积
Discover Resources
暗棋的步距
Slope of perpendicular lines
優良作品8(宜庭)
正立方體的截痕
some circles
Discover Topics
Multiplication
Parabola
Secant Line or Secant
Similarity Transformation or Similarity
Step Functions