Question

Three interior angles of a quadrilateral are equal. If the measure of each equal angle is 92 degree, find the measure of fourth angle

Answer 1

let 4th angle =x
we know that the sum of the angles of a quadrilateral = 360 degrees
if the measure of each angle is 92 degrees
then a+b+c+d=360 degrees
92 +92 + 92 +x=360 degrees
276+x =360
x=360 -276
x=84 degrees