Match the following intervals with their names.(2 points)

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Two notes appear on the bass staff in the following order: a D on the third line and a G on the lowest line.
Two B-flats are shown stacked.
Two F notes appear parallel to one another on the fourth line of the bass staff.
Answers:
1. octave
2. fifth
3. unison

1. octave

2. unison
3. fifth

The correct matches are:

1. Two notes appear on the bass staff in the following order: a D on the third line and a G on the lowest line. - octave

2. Two B-flats are shown stacked. - fifth

3. Two F notes appear parallel to one another on the fourth line of the bass staff. - unison