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Question 1
Forfatter
Arthur Lee
圖中有一組藍色的線。移動紅點可改變其中一條線的角度。圖中可以出現最多幾多對互相垂直的藍線？
GeoGebra
答案：四對
Nye Materialer
bewijs stelling van Pythagoras
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Discriminant of y = ax² + bx + c
Steel Chair
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Opdag Ressourcer
Modular Powers
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AAS Congruence
Udforsk emner
Firkanter
Statistiske karakteristika
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Fordelinger
Kegle