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对多边形对角线、内角和、外角和的理解
Author:
Hello Math
Topic:
Geometry
,
Polygons
GeoGebra
New Resources
兩位數除以一位數（一）
畫出對稱圖形
【案例】2018年全国1卷理科12题
四邊形的特性
兩組對邊相等的四邊形
Discover Resources
斜率 - 概念及定義 (1)
Add and subtract
面積和體積
廣義角的代換(90,270)
橢圓3-平行四邊形法
Discover Topics
Sphere
Addition
Power Functions
Upper and Lower Sum or Riemann Sum
Circumcircle or Circumscribed Circle