Question

1. For triangles AOB and COD, angle 1 is equal to angle 2 as they are vertical angles.

2. AO = OC and BO = OD because it is given that diagonals bisect each other.

3. Therefore, the triangles AOB and COD are congruent by SAS postulate.
4. Similarly, triangles AOD and COB are congruent.

5. By CPCTC, angle ABD is equal to angle CDB and angle ADB is equal to angle CBD.
6. As the corresponding angles are congruent, the opposite sides of quadrilateral ABCD are parallel.

7. Therefore, ABCD is a parallelogram.
Which is the first incorrect statement in Elba's proof?

Answer 1

Is there a wrong statement

Answer 2

can someone please help me

Answer 3

anyone