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

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

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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) (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
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