Read this article and watch the videos. Pay close attention to the definition of a perpendicular bisector and the perpendicular bisector theorem, which tells us how to make a triangle out of a line segment and a perpendicular bisector. Read examples 1–5.

Then, complete review questions 1–3 and check your answers.

Click https://www.ck12.org/geometry/Perpendicular-Bisectors/lesson/Perpendicular-Bisectors-BSC-GEOM/ link to open resource.