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反射 Reflection of Light by Plane Mirror
Author:
Alex CHIK
GeoGebra
GeoGebra 互動數學教室
http://www.geogebra.hk
New Resources
Piano. Keyboard.
Angles and Intersecting Lines: Quick Investigation
Slope Field (1)
Stairs (Optical Illusion)
Rotating Points (Optical Illusion)
Discover Resources
Secant and Tangent
Curve Stitching mod 17
easy way
Perpendicular Bisector 2020
Whiteboard 白板 (Portrait 縱向)
Discover Topics
Function Graph
Logic
Multiplication
Power Functions
Centroid or Barycenter