kathyc53
01.06.2020 •
Mathematics
Calculate the 4th angle of a quadrilateral if the other sides are 56, 115 and 120.
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Ответ:
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°
Ответ:
Pretty sure its B.
Step-by-step explanation:
Because in just learned it.