### Possible Answer

... and Arithmetic > Which tools are necessary to construct a ... required to be perpendicular ... thing to construct a perpendicular bisector as an ... - read more

... Make formal geometric constructions with a variety of tools and ... the perpendicular bisector of a ... his or her paper that are not needed for ... - read more

Please vote if the answer you were given helped you or not, thats the best way to improve our algorithm. You can also submit an answer or search documents about what is which tool is not needed to construct a perpendicular bisector.