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Show that the relation R, defined by the...

Show that the relation R, defined by the set A of all triangles as : `R = { (T_1, T_2) = T_1` is similar to `T_2`} is an equivalence relation. Consider three right-angled triangles `T_1` with sides `3, 4, 5, T_2` with sides `5, 12, 1 3` and `T_3` with sides `6, 8, 10`.

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