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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
Area Between Two Curves
apec
函數的單調性
Prism Drawn in 2-Point Perspective
Slope Between 2 Points (Phase 2)
Discover Resources
סרטוט מקביליות
กราฟsin
Right triangle
Angle Sum Property of Quadrilateral
榫卯结构
Discover Topics
Natural Numbers
Differential Equation
Orthocenter
Arithmetic Operations
Special Points