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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
異分母分數減法
第八周作业
四邉形 (四年級) 教師版
算柱 (兩位數)
三位數除以一位數（二）
Discover Resources
example 1_sun
Angle between line & plane
gjc090a23 鈍角三角形外心
分數互化 測試畫面 IPAD
拋物線四-平行四邊形法
Discover Topics
Similarity Transformation or Similarity
Random Variables
Secant Line or Secant
Reflection
Quadrilaterals