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與三個半圓相切之圓家封閉面積
Author:
張道民
GeoGebra
New Resources
兩位數除以一位數（二）
球體建築師
異分母分數減法
找出對稱軸
畫出對稱圖形
Discover Resources
尺規作圖髒髒版
纏繞SEQUENCE版
邊長與三角形
Copy of 愛心
六上：圆的面积公式推导
Discover Topics
Cube
Trapezoid
Random Variables
Line Segment
Root