the three angle of a quadrilateral are 80 degree 70 degree and 120 degree find the fourth angle of the quadrilateral .
Answers
Answered by
18
90 degree........
....
....
Answered by
34
hello..............
sum of all angle of quadrilateral=360
let the fourth angle = x
80 + 70 + 120 + x = 360
270 + x = 360
x = 360 - 270
x = 90
so the fourth angle is 90 degree..........
sum of all angle of quadrilateral=360
let the fourth angle = x
80 + 70 + 120 + x = 360
270 + x = 360
x = 360 - 270
x = 90
so the fourth angle is 90 degree..........
Similar questions