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Angle of Elevation & Angle of Depression 仰角和俯角
Author:
kasiraja
GeoGebra
New Resources
Rotating Points (Optical Illusion)
Construct a Square
Pelecoid
Introduction
van Aubel's Theorem
Discover Resources
Vertical line test
C3 Chapter 5 (Edexcel) - the modulus function
Parallel Lines
Trisection of an angle
Horizontal and Vertical Translations
Discover Topics
Difference and Slope
Pie Chart or Circle Chart
Quadratic Equations
Straight Lines
Step Functions