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Mathematics, 28.01.2020 13:53 emilyask

The measures of the three of the interior angles of a quadrilateral are 60°, 110°, and 90°. what is the measure of the fourth angle of this quadrilateral?

a 20°

b 40°

c 100°

d 180°

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The measures of the three of the interior angles of a quadrilateral are 60°, 110°, and 90°. what is...
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