Treat my answer as what it is - hearsay - but the way I remember reading about it being explained, there is indeed sign-language poetry, and gestures having similar or complimentary movements were considered rhyming, which I guess also makes intuitive sense.
Treat my answer as what it is - hearsay - but the way I remember reading about it being explained, there is indeed sign-language poetry, and gestures having similar or complimentary movements were considered rhyming, which I guess also makes intuitive sense.