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三角形重心、垂心、內心、外心、尤拉線、九點圓圖解
Author:
吳政憲
Topic:
Orthocenter
GeoGebra
New Resources
算柱 (兩位數)
判斷球體
異分母分數減法
三位數除以一位數（二）
拼砌四邊形
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在三角形兩個邊各取一點使得三線段等長(BK=KL=CL)
優良作品2(怡婷)
How to reconstruct a quadrilateral farm to a triangular one with the same area?
旋转的线段组成面
一个三棱锥的绘图案例
Discover Topics
Hypothesis Testing
Rectangle
Percentages
Quadrilaterals
Frequency Distribution