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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
Solving 2x2 and 3x3 Systems Using Cramer's Rule
רישום חופשי
bewijs stelling van Pythagoras
Slopes of Straight Lines
apec
Opdag Ressourcer
Duplicating Segments and Angles Practice
Scaling a Cube
Problem 7_3
Udforsk emner
Legemer eller 3D-figurer
Enhedscirkel
Differentialligninger
Cylinder
Eksponentielle funktioner