Question

the exterior angles of triangles are 130 degree, 140 degree, X degree then X degree is the options given over here are 90 degree 100 degree 100 and 10 degree and 120 degree

Answer 1

Sum of Exterior angle of any polygon =360°,

then

130° + 140° + x =360°,

270° + x=360°,


then

x=360°-270°,

x=90°

Answer 2

90 is the answer which is first option