Question

prove that tri. CDA and tri. ABC are congruent

Answer 1

In the given figure,
Given :- CD = AB and BC = AD
To prove :- ∆CDA is congruent to ∆ABC

Proof:-
In ∆CDA and ∆AbC,

CD = AB (given)
BC = AD (given)
CA = CA (common)

So by SSS congruency criterion,

∆CDA is congruent to ∆ABC


Hope it helps dear friend ☺️

Answer 2

hello here you go
In triangle abc and cda
cd=ab (given)
da=bc (given)
ac=ac (common)
by sss criteria Δcda and Δabc are congruent