Find the measure of each missing angle unit 5 relationships in triangles homework 1

Find the missing part. use an improper fraction for your answer.

Abby is preparing fruit punch for her party. she starts with a bowl filled with liquid that has 1/2 fruit juice and 1/2 sprite, but she decides it's too fruity. so she pours out 1/4 of the liquid, and then fills the bowl up again with sprite. what fraction of the punch is now sprite?

Which undefined geometric term is described as a location on a coordinate plane that is designed by an ordered pair (x,y) ?