Mathematics

Mathematics

Problem

Two adjacent angles of a parallelogram are in the ratio 4:54:5. The angles are (A) 90∘,90∘90^\circ, 90^\circ (B) 40∘,140∘40^\circ, 140^\circ (C) 60∘,120∘60^\circ, 120^\circ (D) 80∘,100∘80^\circ, 100^\circ

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