Question

19. Two lines intersect at a point O. If one angle is 40°, find the vertically opposite angles​

Answer 1

Answer:

Step-by-step explanation:

If one angle is 40° the vertically opposite one will also be 40°.Now we know othe two angles are also vertically opposite, therefore the angles of those two will also be the same,let it be x

Now we know,sum of all four angles =360°

According to the problem,

x+x+40°+40°=360°

2x+80°=360°

2x=(360-80)°

2x=280°

X=280°/2=140°

Therefore the angles are 40°,140°,40°,140°

<<Hope it helps>>