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[中考] 2017 北京-26-半圆内的直角三角形
Author:
洋葱教研
GeoGebra
New Resources
龙形曲线-分形龙
撒针估算面积实验
直線的斜率：水平變化 & 鉛垂變化
异形操场
平行線的判定
Discover Resources
gsx-b1 數線上的點
直徑式的原理
angle sum of triangle
物理
频率与概率——投掷硬币的试验
Discover Topics
Polygons
Derivative
Incircle or Inscribed Circle
Conic Sections
Statistical Characteristics
