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第一組-垂心
Author:
mathguo
Topic:
Orthocenter
第一組-垂心
GeoGebra
New Resources
異分母分數減法
判斷球體
三位數除以一位數（一）
兩位數除以一位數（一）
兩組對邊相等和有直角的四邊形
Discover Resources
黎曼和與積分
Locus (Non parallel lines)
勝者即正義，可愛即正義～(可用Ctrl+滑鼠滾輪放大界面)
Copy of 角平分線分點比例
有理数与无理数
Discover Topics
Arithmetic
Subtraction
Plane Figures or Shapes
Piecewise Functions
Solids or 3D Shapes