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扇形面積公式
Author:
maths324324
GeoGebra
New Resources
畫出對稱圖形
兩組對邊相等和有直角的四邊形
拼砌四邊形
【案例】2018年全国1卷理科12题
三位數除以一位數（一）
Discover Resources
方格紙上畫正方形4
三角形內部一點到三頂點距離和最小
太极图
多項式函數的遞增與遞減(分段塗函數顏色)
對數函數1
Discover Topics
Vectors 2D (Two-Dimensional)
Optimization Problems
Root
Boxplot
Planes