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UKMT Junior Mathematical Challenge, 2019

Geometry Difficulty 2.0 Junior Find the answer United Kingdom

The diagram shows a regular heptagon. Which of these expressions is equal to $p + q + r + s + t$ ?

(A) $180 + q$ (B) $180 + 2q$ (C) $360 - q$ (D) $360$ (E) $360 + q$

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