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象限
Author:
李春培
GeoGebra
New Resources
第八周作业
三位數除以一位數（一）
球體建築師
【案例】2013年安徽高考15题
兩組對邊相等的四邊形
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方格紙上畫長方形3
[問題] a² + b² = 1, (c-4)² + (d-2)² = 5，求 ad - bc 最大值？
Copy of 固定周界的長方形的面積變化
Clock Simulation
-1/8 ≤ cosα cosβ cosγ ≤ 1
Discover Topics
Pyramid
Geometric Mean
Numbers
Correlation
Fractal Geometry