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CEMC Gauss (Grade 7), 2005

Geometry Difficulty 1.0 Junior Find the answer Canada

In the diagram, the size of $\angle ACB$ is

(A) $57^{\circ}$ (B) $37^{\circ}$ (C) $47^{\circ}$ (D) $60^{\circ}$ (E) $17^{\circ}$

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