Answer:
Vertically Opposite angles: When two lines intersect, at a point four angles are formed.The Angles which do not form linear pair are vertically opposite angle.
In the given figure two lines, AD and EC , intersect at point B.The four angles formed are , ∠ABE,∠DBE ,∠CBD,∠ABC.
Angles which form linear pair: 1. ∠ABE,∠DBE
2. ∠DBE ,∠CBD
3.∠CBD,∠ABC
4.∠ABE,∠ABC.
Vertically Opposite Angles:
1. ∠ABE,∠D BC
2. ∠ABC,∠D BE
Option B:
1. ABE and C B D
Option D
2.ABC and E B D
