Volltext
Hans Walser, [20110221a]
Area of Stars
The black points are the vertices of a regular n-gon. The blue point (the center of the star on the right) is an arbitrary point on the circle through the black points.
Prove: The area of the left star is half the area of the star on the right.
What about the case n=2?
Fig. 1: n = 3
Fig. 2: n = 4
Hans Walser: Area of Stars 2/2
Fig. 3: n = 5
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