useless math topics

in math we are learning lots of important stuff like dividing fractions and stuff we will acually use in our daily lives. but there are topic that are completly pointless uven if ur an astronaut, like polynomials for example never outside of school will you need to know what a polynomial is, also in the circles unit when you got to find the angles with knowing one of them, if youi can measure the first angle then why dont you just measure the rest instead of using pathgeruim theorum to figure out the length of a line?