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三角形的四心－五線－內外二圓
Author:
Ho-Kai Chen
四心：內外重垂
GeoGebra
New Resources
【案例】圆柱体内放置一个大球六个小球
四邊形的特性
四邉形 (四年級) 教師版
GeoGebra笔记功能体验课件
算柱 (兩位數)
Discover Resources
龍騰4加分講義
平方數2平方數2
task3
練習 - 逆時針旋轉（三角形）
Test
Discover Topics
Natural Numbers
Arithmetic Operations
Means
Geometric Distribution
Scatter Plot