1) a=b, then that means b=a
2) a=b, then b will =c, which means a can =C too
3) X = X. with real numbers, irrational numbers, rational numbers
4) Property of equality and congruence
6) 6+5 = 5+6
7) 8(5+6) = 8(5) + 8(6)
9) default function?
10) associative property