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圓周率圓周率
Author:
李春培
Topic:
Circle
圓周率圓周率
GeoGebra
New Resources
兩組對邊相等的四邊形
四邉形 (四年級) 教師版
球體建築師
三位數除以一位數（二）
兩組對邊相等和有直角的四邊形
Discover Resources
拿破侖定理(外拿破侖)證明二
gjh-e01-04 未知數角度的三角形
小棒
拋物線6--包絡線法
同心圓
Discover Topics
Curve Sketching
Vectors 3D (Three-Dimensional)
Linear Regression
Sphere
Line Segment