# What is the measure of the missing angle

As you can see that it is a quadrilateral, and as sum of all angles of a quadrilateral =360° Therefore, 72°+91°+107°+x =360° 270+x =360° x = 360°-270° = 90° Therefore, x is equal to 90°, hence option D is correct.

Since the following question involves a parallelogram, a parallelogram=360°. Knowing this information, we can add all the known angles, subtract it from 360, and get your answer: 360-270=90 So 90° is your answer, or D

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