Angle Bisector Theorem

Author:
Juliette

If a point is on the bisector of an angle, then it must be equidistant from the sides of the angle

StatementsReasons
line h is the angle bisector of angle BGiven
D is a point along the angle bisectorGiven
angles DBE and FBD are congruentDef. of angle bisector
line j is perpendicular to BCGiven
line i is perpendicular to ABGiven
angles E and F are congruent Def. of perpendicular
line BD is congruent to BDReflexive property
Triangles BFD and BDEAAS
Segment DE and FD are congruentCPCTC