Why are reference points important?

because they r

Explanation:

In the particular case of motion, a reference point is a stationary point in space. ... A reference point is important in determining motion because in order to say that something is moving, you need to have something stationary to compare it to.

uhhh because it takes you back to the topic??

Explanation:

which are post-impressionist paintings? check all that apply?

explanation:

post-impressionism is a predominantly french art movement that developed roughly between 1886 and 1905, from the last impressionist exhibition to the birth of fauvism. post-impressionism emerged as a reaction against impressionists' concern for the naturalistic depiction of light and color.

hope this have a good day