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Ex5C#10
Author:
Big Lee
GeoGebra
New Resources
判斷球體
找出對稱軸
兩組對邊相等的四邊形
球体的体积推导（优化版）
兩組對邊相等和有直角的四邊形
Discover Resources
荒島尋寶
生活中的平面圖形─點與線的性質
gjh-b03-01 圓與直線關係
第一組
正方形所夾三角形面積相等
Discover Topics
Equations
Trapezoid
Trigonometric Functions
Frequency Distribution
Upper and Lower Sum or Riemann Sum