Question

A quadrilateral has angle measures of 120 degrees ,37 degrees and 48 degrees what is the measure of the forth angle

Answer 1

Let the fourth angle be x

Angles in a quadrilateral add up to 360°

To find the fourth angle add all the known angles and subtract them from 360°

That's

x + 120+37+48=360

x + 205 = 360

x = 360-205

x = 155°

Therefore the fourth angle is 155°

Hope this helps