If ABCD is a Trapezium in which AB ıı CD and AD=BC, then:

Correct option is A

1. Given:

- ABCD is a trapezium in which AB $$\parallel$$​ CD and AD = BC .

2. Concept Used:

- In an isosceles trapezium $$( AB \parallel CD and AD = BC )$$​, the base angles adjacent to the parallel sides are equal.

- This means $$\angle A = \angle B and \angle D = \angle C$$​ .

3. Solution:

- Since AD = BC , the trapezium is an **isosceles trapezium**.

- Therefore, $$\angle A = \angle B and \angle D = \angle C$$​ .

4. Answer:

The correct option is:  A. $$\angle A = \angle B$$​ .