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zloy xaker [14]
3 years ago
11

The measures of the three of the interior angles of a quadrilateral are 60°, 110°, and 90°. What is the measure of the fourth an

gle of this quadrilateral?
A 20°

B 40°

C 100°

D 180°
Mathematics
1 answer:
irina [24]3 years ago
6 0
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!
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