Question: just answer number 3 please 3. Let V be the group of symmetries of a non-square rectangle. Show that V is a subgroup of DA.

just answer number 3 please

3. Let V be the group of symmetries of a non-square rectangle. Show that V is a subgroup of DA. In the notation of Chapter 1 of Gallian, which elements of DA are in V? (Note: Incidentally, V is an example of a group from Problem 2a.) 4. Let G be a group of order 6 whose Cayley table contains the following entries

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