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STEP 3 2009 Q1
Author:
John Brennan-Rhodes
GeoGebra
New Resources
Exploding cube
Silhouettes
The Cosine Formula - Proof Without Words
Silhouettes without gaps and isolated
Rolling Triangle
Discover Resources
Start, Copy an Angle
Landscape Presentation
Olimpiada București 5.
Reflection off a Concave Mirror
直线与平面所成的角（正四棱锥）
Discover Topics
Symmetry
Statistics
Power Functions
Diagrams
Line Segment