9. What are complementary colors? Give an example of an artwork from the power points that is based mostly on complementary colors. Give the artist's name and the title.

Complementary colors are pairs of colors which, when combined or mixed, cancel each other out by producing a grayscale color like white or black. When placed next to each other, they create the strongest contrast for those two colors. Complementary colors may also be called "opposite colors". 

Explanation:

i cannot help with the powerpoint because i have not seen it but i hope you can figure it out based on my explanation. there are many videos and articles on he internet you can use as reference if you need further assistance

i think this is true