in figure 12. 32' it is given that AB = DC and AC = DB
A) state the three pair of equal parts in the triangle ∆ABC and ∆DCB.
B) Is ∆ ABC is congruence to ∆DCB? Give reason.
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In above's figure
Given that
AC = DB
AB = DC
ABC = 90° = DCB
Now
( A.) Three pairs of equal parts .
AC = DB (given)
AB = DC (given)
BC = BC (common)
( B.)
Yes ∆ ABC is congruent to ∆ DCB
via SSS criteria of congruency
as
AC = DB (given)
AB = DC (given)
BC = BC (common)
Also it is congruent by SAS criteria of congruency .
as
AC = DB
ABC = 90° = DCB
AB = DC
Hope it helps you
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