it is given that,
AB = CD
and,
m
As the alternate angles are equal so,
AD will be parallel to BC,
the area two triangles,
ADC and ABC,
AB = CD ..... given
mAC = AC ...... common side between the triangles,
so, by rule of SAS ( side - angle - side)
thus, the given triangles are congruent.
i have solved your problem in the answer tab.
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