UKMT Grey Kangaroo, 2024

Geometry Difficulty 1.0 Junior Find the answer United Kingdom

Carina baked a cake and cut it into ten equal pieces. She ate one piece and then arranged the remaining pieces evenly, as shown. What is the size of the angle at the centre of the cake between any two adjacent pieces?

(A) $5^{\circ}$ (B) $4^{\circ}$ (C) $3^{\circ}$ (D) $2^{\circ}$ (E) $1^{\circ}$

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