Thomsen's Figure

Take any Triangle with Vertices , , and . Pick a point on the sideopposite , and draw a line Parallel to . Upon reaching the side at , draw the line Parallelto . Continue (left figure). Then for any Triangle. If is the Midpoint of , then (right figure).

References

Madachy, J. S. Madachy's Mathematical Recreations. New York: Dover, pp. 234, 1979.

• Siegel Modular Function
• Siegel's Paradox
• Siegel's Theorem
• Sierpinski Arrowhead Curve
• Sierpinski Carpet
• Sierpinski Constant
• Sierpinski Curve
• Sierpinski Gasket
• Sierpinski-Menger Sponge
• Sierpinski Number of the First Kind
• Sierpinski Number of the Second Kind
• Sierpinski's Composite Number Theorem
• Sierpinski Sieve
• Sierpinski Sponge
• Sierpinski's Prime Sequence Theorem
• Sierpinski's Theorem
• Sierpinski Tetrahedron
• Sierpinski Triangle
• Sieve
• Sieve of Eratosthenes
• Sievert Integral
• Sievert's Surface
• Sifting Property
• Sigma Algebra
• Sigma Function