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三角型內切圓
Author:
潘昜亘
三角型內切圓
GeoGebra
New Resources
錐體建築師
找出對稱軸
畫出對稱圖形
柱體建築師
拼砌四邊形
Discover Resources
減法
均分除法（分數÷整數）
gmj106a13 八角錐
圖形的周界
拉格朗日插值多項式
Discover Topics
Solids or 3D Shapes
Polygons
Trigonometric Functions
Fractions
Diagrams