The measures of three angles of a quadrilateral are 80, 90, and 103 degrees.
Find the measure of the fourth angle.
87
To find the measure of the fourth angle of a quadrilateral, you need to know that the sum of all four angles in a quadrilateral is always 360 degrees.
In this case, the given measures of the three angles are 80, 90, and 103 degrees.
To find the measure of the fourth angle, you can subtract the sum of the given angles from 360 degrees:
360 - (80 + 90 + 103) = 360 - 273 = 87 degrees.
Therefore, the measure of the fourth angle is 87 degrees.