Question

25.IN Figure 15,lines AB and CD intersect at point O.If ZAOD:ZBOD=4:5,find all the angles.​

Answer 1

Answer:

Step-by-step explanation:

given ratio of angles AOD and BOD is 4:5

let angle AOD=4x and BOD=5x

both these angles are supplementary(add to 180)

4x+5x=180

9x=180

x=20

angle AOD=angle BOC=80

angle BOD=angle AOC=100    [Vertically opposite angles]