Did Leonardo da Vinci draw the sketch of the Viola or the violin?

He drew the sketch of the both instrument, violin and the viola. However, he wasn' t the first one to CREATE the first TRUE violin. [ The creator of the first TRUE violin is Andrea Amati.] Andrea He drew the sketch of the both instrument, violin and the viola. However, he wasn' t the first one to CREATE the first TRUE violin. [ The creator of the first TRUE violin is Andrea Amati.] Andrea Amati was only 13 years old when he created it.. :) hope it helped~