Question

in figure 4 ABCD is a rectangle its diagonal AC and BD intersect each other at O, AC is produced to e such that angle ACD is 140 degree find the measure of the angles of angle AOB​

Answer 1

answer is 110 as the sum of angles of quadrilateral is 360 ......so ACD+AOB+BOC should be 360

put the values

110+x+x=360

360-110=220

2x=220

x=220/2=110

so x is 110 x= AOB