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UKMT Junior Mathematical Challenge, 2022

Geometry Difficulty 2.0 Junior Find the answer United Kingdom

The diagram shows the square $RSTU$ and two equilateral triangles, $PUT$ and $QRU$ . What is the size of angle $QPU$ ?

(A) $10^\circ$ (B) $15^\circ$ (C) $20^\circ$ (D) $25^\circ$ (E) $30^\circ$

Figure for this problem

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