ABCD is a trapezium in which AB || CD and AD = BC (see the given figure). From the figure, which of the following can be deduced?
ΔABC≅ΔBAD
In ΔABC and ΔABD,
AB = BA (Common side)
BC = AD (Given)
∠B=∠A (Proved before)
ΔABC≅ΔBAD (SAS congruence rule)