Verified Answer :

sqdancefan

Answer:

  b.  50

Step-by-step explanation:

The sum of the interior angles of a quadrilateral is 360°, so the missing angle is ...

  360° - 110° -40° -80° = 130°

The angle x° is the supplement to this, so is ...

  180° -130° = x° = 50°

The value of x is 50.

biasedtoast591

Answer:

b

Step-by-step explanation:

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