False. they still exist today, and they existed before the 1980s as well :)
1) 3 1/2 beats
Quarter note, eighth note, quarter note, quarter note
2) 2 beats and 1 rest
Quarter note, quarter note, rest
3) 2 beats, rest, 1 beat
Half note, rest, quarter note
Plato is pointing up to the heavens, signifying that everything is a reflection of Forms that resides in heaven.
Eakins used photographs as a teaching tool with students