Practice problem
△ABC\triangle ABC△ABC is an isosceles triangle where AB‾=BC‾\overline {AB} = \overline {BC}AB=BC. BD‾\overline {BD}BD is perpendicular to AC‾\overline{AC}AC. What is BD‾\overline {BD}BD's relationship to AC‾\overline {AC}AC?
They are just perpendicular.
BD‾\overline {BD}BD is perpendicular bisector of AC‾\overline {AC}AC.
They are perpendicular bisectors to each other.
Type a concept, like “slope” or “photosynthesis”.