1.
Triangle DAC is isosceles with congruent
sides AD and AC. Which additional given
information is sufficient for showing that
triangle DBC is isosceles? Select all that
apply.
A Segment DB is congruent to segment BC.
B. Segment AB is congruent to segment BD.
C. Angle ABD is congruent to angle ABC.
D. Angle ADC is congruent to angle ACD.
E. AB is an angle bisector of DAC.
F. Triangle BDA is congruent to triangle BDC.