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two triangles and three concentric semi-circles

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Two Triangles and Three Concentric Semi-Circles

Posted on Jul 18, 2020

Two Triangles and Three Concentric Semi-Circles

Two right-angled triangles and three concentric semicircles. What fraction is yellow?

Created on May 9, 2021 20:55:56 by Andrew Stacey
Views: Print | TeX | Source | Linked from: Catriona Agg's puzzles, Catriona Agg's puzzles 2020, two triangles and three concentric semi-circles techniques