Question

DC and AB intersect each other at point O if AOD = 2X-40 and BOC=X+10 then what is the value the X​

Answer 1

∠BOD = ∠AOC

(Vertically opposite angles are equal)

∠BOD = 50°

(ii) ∠AOD

∠AOD + ∠BOD = 180°

∠AOD + 50° = 180° (From i)

∠AOD = 180° - 50°

∠AOD = 130°

(iii) ∠BOC = ∠AOD

(Vertically opposite angles are equal)

∠BOC = 130°