Question

ABCD is a Quadrilateral. AO and BO are the angle bisectors of angle A and B which meet at O. If angle C=70°,angle D=50°,find angle AOB
​

Answer 1

Answer:

Step-by-step explanation: A + B = 180 ( co interior angle

1/2 A + 1/2 B = 180

OAB  + OBA =90

OAB + OBA + O = 180 ( angle sum property

O = 180 - 90 = 90

Answer 2

Answer:

read the solution carefully