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垂心(劉虹圻623)
Author:
呂麗珠
Topic:
Orthocenter
GeoGebra
New Resources
兩位數除以一位數（一）
畫出對稱圖形
異分母分數減法
兩位數加法
三位數除以一位數（二）
Discover Resources
面積1轉正三角形
start and end clock face
Curtate Cycloid
RLC串聯諧振
模拟时钟
Discover Topics
Confidence Interval
Arithmetic Mean
Cone
Secant Line or Secant
Linear Equations