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Sum of Exterior Angles of Polygons
Author:
pycchansir
GeoGebra
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活动三：应用性质
第八周作业3
常见四边形是否是双心四边形
斐波那契螺旋弧线（表格法）
直線的斜率：水平變化 & 鉛垂變化
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雙曲線的題目
數學模型
勝者即正義
-1 ≤ cosA cosB cosC ≤ 1/8
以 Unit Circle 了解 Sine 的正/負的副本
Discover Topics
Planes
Orthocenter
Trapezoid
Geometry
Incircle or Inscribed Circle