a) A perfect authentic cadence uses this
chord progression: V-I.
b) A cadence that features the chords IV - I is
called a plagal
cadence.
c) V-I, where the top voice does not end on the
tonic, is this type of cadence: imperfect authentic.
d) A half cadence uses this chord progression:
I-V.
e) This cadence is sometimes called the "Amen"
cadence: plagal.