Question

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Answer 1

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

as both the lines are straight

so angle COA = BOD angle. by vertically opposite angle property

the angle COA + COB = 180°. by angle formed on straight line

so 40°+COB =180°

so Angle COB = 140°

now , angle COB = AOD. by vertically opposite angle

so COA=40°

COB= 140°

BOD=40°

AOD=140°