Question

- 1. In Fig., AC || BD and AC = BD. State the equal parts of these two triangles which ensure that triangle ACO is congruent to triangle BDO.​

Answer 1

We have AO = OB and CO = OD since AB and CD bisect each other at O.

Also ∠AOC = ∠BOD since they are opposite angles on the same vertex.

Therefore by SAS congruence condition, △AOC≅△BOD.

Answer 2

Answer:

taken angle a CO confident angle BDO

AC equal DB (given)

angle aco is equal to angle BDO(alternate angles)

angle AOC equal angle BDO(vertically opposite angles)

Hence, triangle ACO confident triangle BDO ( by SAA concurrent rule)