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內外角平分線的副本
Author:
Niehanyu
,
羅驥韡 (Pegasus Roe)
角平分點（圖中 C 點）會形成一個圓
GeoGebra
New Resources
sanjiaohanshu
美國國旗 (Codex 版)
拼砌四邊形
第八周作业
找出對稱軸
Discover Resources
梯形的面積
Sequence指令練習(逐一套疊正方形)
locus wrt two pts on two indep. circle
test03繪本用
纏繞畫1
Discover Topics
Integers
Function Graph
Equilateral Triangles
Root
Vectors