In △PQR, the sum of ∠P and ∠Q is 60∘. The measure of ∠R is
(A) 60∘ (B) 300∘ (C) 120∘ (D) 30∘ (E) 40∘
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Source: CEMC, University of Waterloo,
licensed CC-BY-NC-4.0.
Statement reproduced verbatim; metadata (topic, difficulty) added by this project. Solutions are the publisher's, linked not copied.