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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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Oct 14, 2018
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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°
Mathematics
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Ulkas
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Ulkas
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The answer is C. 100 because the total measure of a quadrilateral is 360. When you add up the 3 interior angle measures, it adds up to 260. Then you subtract 360-260 to get 100 as the fourth angle measure. Hope that this helped!
Kyle Lemons
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Oct 21, 2018
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