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三心：與三角形形狀的關係
Author:
葉宇笙
可以拉動頂點改變三角形，觀察三心位置變化。
GeoGebra
New Resources
第八周作业
【案例】2018年全国1卷理科12题
兩組對邊相等的四邊形
兩組對邊相等和有直角的四邊形
找出對稱軸
Discover Resources
仿生獸
橢圓
Proof35 高士哲
鉛筆畫圓
尺规作图得到黄金三角形和黄金矩形
Discover Topics
Pythagoras or Pythagorean Theorem
Constructions
LCM and GCD
Quadratic Equations
Conic Sections