The sides of the triangles which are congruent are BT ≅ CT, the correct option is C.
What is a Triangle?
A triangle is a polygon with three sides, three angles and three vertices.
The triangle ∆BAT ≅ ∆CAT.
When two triangles are congruent, the corresponding sides are congruent by CPCTC.
It can be understood from the triangle vertices that AT is common side in both the triangles.
BT is corresponding to CT and so is equal.
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