Italian mathematician who popularized the modern Arabic system of numerals in the western world and discovered the Fibonacci sequence
fluency
spoken or written with ease
obnoxious
annoying or objectionable due to being a showoff
patterns
something that repeats
quintessential
the most perfect example of something
repetition
the act of repeating
tangram
a Chinese puzzle consisting of a square cut into five triangles, a square, and a rhomboid, which can be combined so as to form a great variety of other figures
