An equilateral triangle with two line segments crossing exactly on the semicircle. What is the proportion red : green?
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An equilateral triangle with two line segments crossing exactly on the semicircle. What is the proportion red : green?
Two squares and an extended side. Prove that red : green = blue : yellow.
A unit square containing two red overlapping congruent rectangles. If they cover exactly half the square’s area, what is their width x?