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第四冊 3-4 大角對大邊
Author:
簡士峻
GeoGebra
New Resources
Fibonacci Clock
算柱 (兩位數)
美國國旗 (Codex 版)
四邉形 (四年級) 教師版
找出對稱軸
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四心的變化II
Equality of Ratios
圓上的角任務一: 提示卡(一)
Internal tangent
诱导公式四（原点对称关系）
Discover Topics
Vectors 2D (Two-Dimensional)
General Quadrilateral
Quadratic Equations
Definite Integral
Division