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內切圓
Author:
楊明德
Topic:
Incircle or Inscribed Circle
GeoGebra
New Resources
算柱 (兩位數)
兩位數加法
兩組對邊相等和有直角的四邊形
【案例】2018年全国1卷理科12题
三位數除以一位數（一）
Discover Resources
坐標幾何
圓的平移
行星軌跡
projection01 by Mr LO WY
畫三角形 題1d 的複本
Discover Topics
Continuity
Quadrilaterals
Power Functions
Set Theory
Derivative