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用向量找北极星
Author:
龚洪萍
Topic:
Geometry
GeoGebra
New Resources
柱體建築師
兩位數除以一位數（一）
兩組對邊相等的四邊形
拼砌四邊形
球体的体积推导（优化版）
Discover Resources
正多邊形的對角線
基礎作圖2
雙曲線3 等軸法
二次函数y=ax²（a＞0)
圓周公式應用題2的副本
Discover Topics
Pythagoras or Pythagorean Theorem
Real Numbers
Function Graph
Addition
Triangles