In the given figure, measures of sides of two triangles $A B C$ and $D E F$ are given. Examine whether the two triangles are congruent or not. If yes, write the congruence relation in symbolic form.

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Solution

Finding that the two triangles $A B C a n d D E F$ are congruent or not
In $∆ A B C a n d ∆ F E D$ , as shown in the figure
$A B = F E = 2.6 c m$
$B C = E D = 4 c m$
$C A = D F = 5.3 c m$
Thus, $A \leftrightarrow F, B \leftrightarrow E, C \leftrightarrow D$
Therefore, by SSS congruency criteria $∆ A B C ≅ ∆ F E D$

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