Question

in the adjoining figure,show that ABCD is a parallelogram

Answer 1

Hey dear friend
from the the figure
triangle ABD & BCD it is clear that
AB = CD =5cm (given)
AB =AB. (common side)
and
angle ABD = angle CDB (alternate angle)
so ABD congurents BCD (SAS rule)
so AD=BC (CPCT)
Hence AB =CD
AD = BC
opposite side are equal and parallel so it is a parallelogram..

Answer 2

Hi friend..

See the attached file


I hope it will help

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