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2 years ago

Please need help asap!!

Mathematics

2 answers:

evablogger [386]2 years ago

7 0

Convex quadrilaterals have a total of 360* when you add up all the angles. But you have to remember that convex angles are always 180* or less. This means that angles A, B, and C are all convex. If you add all the given angle measurements you get 248*. 360-248= 112*. So, your answer is C.

coldgirl [10]2 years ago

5 0

The measures of the interior angles of a quadrilateral add up to 360 degrees, so make angles A, B, C, and x add up to 360 in an equation and solve for x, the missing angle.

(80) + (98) + (70) + x = 360

Combine like terms.

248 + x = 360

Subtract 248 from both sides.

x = 112

C) 112 degrees

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Work Shown:

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