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一次函数与面积3
Author:
尹枝红
GeoGebra
New Resources
正方形雪花图案
直線的斜率：水平變化 & 鉛垂變化
百分數及其應用
双心四边形
异形操场
Discover Resources
平行綫的斜率
威力彩開獎機
柯西不等式 (4)
coterminal angles
对称拼图游戏
Discover Topics
Random Variables
Tangent Line or Tangent
Scalene Triangles
Statistical Characteristics
Random Experiments