5). (3 points each) Find the "?" angle. For these problems you must find one other angle shown as "A" before you can find "?".
a).


A =_______ ? = ________
b).


A =_______ ? = ________
c).


A =_______ ? = ________
d).


A =_______ ? = ________
6). (4 points) [Extra credit] Find the missing angle "?":

? = _______