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Sherlock Holmes' problem
Author:
spkwan
Take out the small square. Re-assemble the remaining pieces to form a quadrilateral.
GeoGebra
What is the secret?
How is the square piece 'lost'?
worksheet: Sherlock Holmes
wksht SherlockHolmes v5.pdf
GeoGebra
Curry's Paradox
worksheet: 64 vs 65
wksht 64vs65 v3.pdf
New Resources
van Aubel's Theorem
Simplifying Radicals: Geometric Thin Slice
Cross Product in 2D and 3D
Isosceles Triangle: Quick Construction
Rotating Points (Optical Illusion)
Discover Resources
Triangular Prism
Translate 1
Geogebra Tutorial: Line Design Complete
Law of Sines Ambiguous Case
WB4 part2
Discover Topics
Circle
Variance
Polygons
Scalene Triangles
Vectors 2D (Two-Dimensional)