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正三角形內一點到三頂點的距離
Author:
羅驥韡 (Pegasus Roe)
Topic:
Area
,
Rotation
,
Triangles
GeoGebra
New Resources
錐體建築師
画直线等分三角形的面积
兩位數加法
拼砌四邊形
三位數除以一位數（二）
Discover Resources
畢氏定理動畫
與兩圓相切之圓心雙曲線軌跡
Triangle on sphere
雙曲線2-焦點法
五組搶答
Discover Topics
Tangent Line or Tangent
Congruence
Means
Line Segment
Orthocenter