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光的反射与折射
Author:
李大地(Field Lee)
GeoGebra
New Resources
Traffic Cone
seo tool
Math Art Construction
z`]]
Circles - Relative Positions
Discover Resources
Parabola: Geometric Property (I)
Math Project
Ladder up a Wall
Isos Triangle with Parallelogram - p. 137 #5
Line of Symmetry Activity
Discover Topics
Histogram
Constructions
Tangent Function
Reflection
Intersection