Let T be the set of all triangles in a plane with R a relation in T given by `R={(T_1,T_2): T_1" is congruent to "T_2}`. Show that R is an equivalence relation.

Let "T" be the set of all triangles in a plane with "R" as relation in "T" given by "R"={("T"_1," T"_2): T_1~="T"_2} . Show that "R" is an equivalence relation.

Let T be the set of all triangles in a plane with R a relation in T given by R={(T_1,T_2): T_1~=T_2} . Show that R is an equivalence relation.

Let T be the set of all triangles in a plane with R as relation in T given by R={(T_(1),T_(2)):T_(1)~=T_(2)}. Show that R is an equivalence relation.

Let T be the set of all triangles in a plane with R a relation in T given by {(T_1,T_2):T_1~=T_2} show that R is an equivalence relation.

Let T be the set of all triangles in a plane with R is a relation in T given by R= {(T_(1),T_(2)): T_(2) is congruent to T_(2) and T_(1), T_(2) in T) . Show that R is an equivalence relation.

Show that relation R = {(T_1, T_2) : T_1 is similar to T_2 }, defined on the set of all triangles, is an equivalence relation.

Let T be the set of all trianges in the Euclidean plane and let a relation R on T be defined as a R b, if a is congruent to b, for all a, b in T Then R is