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Mathematics 13 Online
OpenStudy (anonymous):

Sarla made a drawing of a geometric figure for a fabric print. The figure was a quadrilateral with a pair of angles measuring 40° each. If the figure she drew is a concave polygon, which of these could be the measures of the other two angles? 160°, 140° 220°, 110° 130°, 150° 200°, 80°

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