Question

The measures of three angles of a quadrilateral are 80, 90, and 103 degrees.

Find the measure of the fourth angle.

Answer 1

With any quadrilateral, the angles ALWAYS add up to 360 degrees


So simply solve


80+90+103+x = 360


for x to find your answer

Answer 2

in other words 80+90+103= 273 then 360-273= 87 so your angle is 87.

Answer 3

cool thanks for the answer

Answer 4

no problem