Question

Find the missing angle measure for a quadrilateral with angle measures 112 degrees, 120 degrees, and 35 degrees.

Answer 1

The answer is 93. Add all the sides and subtract 267 (which is what you get adding all the sides you have together) from 360.

Answer 2

sum of quadrilateral interior angles = 360
so 
360 - (112 + 120 + 35)
=360 - 267
=93
answer: missing angle measure for a quadrilateral = 93