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三角形三边关系探究
Author:
fei zhao
Topic:
Triangles
分辨率1280x720
GeoGebra
2020年7月
New Resources
拼砌四邊形
找出對稱軸
球体的体积推导（优化版）
三位數除以一位數（二）
錐體建築師
Discover Resources
內心
多項式函數
star1
包絡線
Regular Tetrahedron
Discover Topics
Optimization Problems
Natural Numbers
Surface
Ratios
Combinatorics