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Đồng hồ Thái Dương - mặt nghiêng
作者：
Lê Hải Nam
GeoGebra
最新資源
Rule of Sarrus - Determinant of a 3×3 Matrix
Rolling a Square
Trammel of Archimedes Art
Regular Star Polygons
Taylor Error Bound
探索資源
Tanton Triangle #3
Distance Formula
Euclid's proof of Pythagoras Theorem (proposition 47)
perpendicular bisector
End Behavior of Four Rational Functions
探索主題
等式
正三角形
黎曼和（Riemann Sum）
矩形
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