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Question 1
Author:
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
New Resources
Torus
Function Machine
seo tool
רישום חופשי
Vector Projections
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Quadratic Function - Standard Form vs. Graphing Form
Inscribe a regular hexgon
Example 12.1.6
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Scatter Plot
Square
Integers
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