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內切圓
Author:
楊明德
Topic:
Incircle or Inscribed Circle
GeoGebra
New Resources
球體建築師
柱體建築師
三位數除以一位數（一）
四邉形 (四年級) 教師版
找出對稱軸
Discover Resources
圓與切線
面積2
圆在多边形上滚动
Primeter
圆的有关概念
Discover Topics
Differential Calculus
Piecewise Functions
Pythagoras or Pythagorean Theorem
Rhombus
General Quadrilateral