2D design is flat design, like drawing or sketching.
http://resources.hwb.wales.gov.uk/VTC/ngfl/dandt/75/Tutorials/2D%20Design/Section1.pdf
use this pdf to learn how to use it
<span>It's style and skilled craftsmanship.</span>
The School of Athens - Raphael
Mona Lisa - Leonardo Da Vinchi
Ghent Alterpiece - Jan Van Eyck
Birth of Venus - Botticelli
David - Michelangelo
hope this helps!
please mark brainliest :)