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Calculate the 4th angle of a quadrilateral if the other sides are 56, 115 and 120.

User Uri Goren
by
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1 Answer

6 votes

Answer:

69°

Explanation:

The sum of the interior angles of a quadrilateral = 360°

Subtract the sum of the given angles from 360, that is

4 th angle = 360° - (56 + 115 + 120)° = 360° - 291° = 69°

User LaaasBIGL
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6.3k points