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 "?":

? = _______