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01-06-2020
Mathematics

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

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jimrgrant1 jimrgrant1

01-06-2020

Answer:

69°

Step-by-step 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°

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