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20200417平面直角坐标系复习T14（2）
Author:
陈敦莹
GeoGebra
New Resources
長方體平面投影 (Codex版)
sanjiaohanshu
國旗 (Claude 版)
四邊形的特性
兩組對邊相等的四邊形
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重複排列
area
x^3+y^3-3xy
三宅一生132 5
圓與切線
Discover Topics
Centroid or Barycenter
Optimization Problems
Secant Line or Secant
Cone
Difference and Slope