An equilateral triangle
scalene triangle
equallateral triangle equallateral triangle
An equilateral triangle
a scalene triangle
Taytum Pow
There is no particular phase to describe it as per my knowledge. It's usually known as Triangle Player. e.g.: John Deacon of the rock group Queen assumed the role of a triangle player during the band's live performances.
A "harmonicanist" is what a person who plays the harmonica is called.
A person who plays Scrabble is called a Scrabbler. (unofficially)
A drummer or percussionist plays the drums.
a cymbalist
harpist
Guitarist
a baritonist
guitarist
A saxophonist.
accordionist