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探究余弦定理
Author:
john arnold
请大家拖动B点，观察当角ACB发生变化时，面积的大小关系是如何变化的
GeoGebra
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兩組對邊相等的四邊形
Fibonacci Clock
國旗 (Claude 版)
美國國旗 (Codex 版)
兩組對邊相等和有直角的四邊形
Discover Resources
人造「四腳獸」？
謝爾賓斯三角形
Area and Volume of a triangular prism(三角柱體的面積和體積)
ISOSCELES TRIANGLE
旋轉體：Washer Method的副本
Discover Topics
Parametric Curves
Expected Value
Rhombus
Algebra
Rectangle