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面積和周界
Author:
Maggie kan
GeoGebra
New Resources
画直线等分三角形的面积
【案例】2018年全国1卷理科12题
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）
Discover Resources
line equation
面積和體積
Angle between 2 planes
Copie de 分數與小數
椭圆的定义
Discover Topics
Right Triangles
Subtraction
Piecewise Functions
Cube
Sphere