SOLUTION: The measures of three angles of a quadrilateral are 80, 90, and 103 degrees. Find the measure of the fourth angle.

Algebra ->  Parallelograms -> SOLUTION: The measures of three angles of a quadrilateral are 80, 90, and 103 degrees. Find the measure of the fourth angle.      Log On


   



Question 313985: The measures of three angles of a quadrilateral are 80, 90, and 103 degrees. Find the measure of the fourth angle.
Answer by rapaljer(4671) About Me  (Show Source):
You can put this solution on YOUR website!
Add the given angles together and subtract from 360 degrees.
80+90+103=273 degrees

360-273= 87 degreees.

Dr. Robert J. Rapalje, Retired