For each relation, determine which of these properties are
present: reflexivity, symmetry, antisymmetry, and transitivity:

I know the definitions of each of the properties but unclear as to how to apply them to each relation.

{(a,a), (a,b), (b,a), (c,c), (d,d)}

{(a,a), (a,b), (a,d), (b,a), (b,b), (b,d), (c c), (d,a), (d,b), (d,d)}

{(a,a), (a,b), (a,c), (a,d), (b,b), (b,d), (c,c), (c,d), (d,d)}

Does anyone know what I would need to do to solve this?