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proof76 謝旻辰
Author:
郭亮偉
GeoGebra
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兩位數除以一位數（一）
四邊形的特性
異分母分數減法
三位數除以一位數（一）
兩組對邊相等的四邊形
Discover Resources
海市蜃樓現象
線之極點定理 / pole of a line theorem
Shoplifting and theft histogram
劉徽的「割圓術」的副本
第一个绘本
Discover Topics
Upper and Lower Sum or Riemann Sum
Pie Chart or Circle Chart
Trapezoid
Area
Right Triangles