Question

In the figure 10.12, if ZBAO = ZDCO and OC = OD, show that AB || CO.​

Answer 1

Step-by-step explanation:

1. in triangle bao and dco
2. => angle BOA =angle DOC (V.O.A)
3. => AO=OC (side opp. to eq. angles are equal)
4. => OD=BO (side opp. to eq. angles are equal)
5. hence triangle bao and dco are congruent triangle (by SAS criteria)
6. AngleABO=AngleOCD (BY C.P.CT)-----(1)
7. From (1) we get.
8. ABIICD (AngleABO=OCD are alt. int angles)
9. H.P