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a semi-circle and a quarter circle

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A Semi-Circle and a Quarter Circle

Posted on 29th March, 2026

A semi-circle and a quarter circle

The two blue angles are equal. What’s the size of the orange angle?

Revised on March 29, 2026 21:44:13 by Andrew Stacey
Views: Print | TeX | Source | Linked from: Catriona Agg's puzzles 2026, a semi-circle and a quarter circle solution, a semi-circle and a quarter circle techniques