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正三角形內一點P, 到三頂點距3,4,5
Author:
Ho-Kai Chen
GeoGebra
New Resources
兩位數除以一位數（二）
兩位數加法
兩位數除以一位數（一）
判斷球體
拼砌四邊形
Discover Resources
三角形重心(相關說明)
大字體
立體圖形
gjc099b34 找指定圓圓心
纏繞畫
Discover Topics
General Quadrilateral
Terms
Upper and Lower Sum or Riemann Sum
Trigonometric Functions
Integral Calculus