Question

two sides of a quadrilateral measure of 55°each. the third angle is 140°. what is the measure of the fourth angle

Answer 1

$<b><font color ="purple">angle one and two measures each=55 degree angle Third measures =140 degree angle fourth =? let fourth angle be x sum of all angles =360degree <1+<2+<3+<4=360 55+55+140+x=360 110+140=360 360-250 =110$

Answer 2

we know that quadrilateral measure is 360°.
let the fourth angle be x
55°+55°+140°+x°=360°
250°+x°=360°
x°=360°-250°
x°=110°
therefore,fourth angle is 110°