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正四面體
Author:
lamanleung
GeoGebra
New Resources
判斷球體
兩組對邊相等和有直角的四邊形
四邉形 (四年級) 教師版
三位數除以一位數（二）
画直线等分三角形的面积
Discover Resources
test02
Congruent Triangles Demo
三角形探究1
圓與圓柱
多平面鏡反射成像
Discover Topics
Parabola
Equilateral Triangles
Surface
Fractions
Bar Chart or Bar Graph