weare asked to show that given the isosceles triangle ABC, and being CD a bisecting segment to prove that angle Step 1:
AC = BC (given)
Step 2:
segment CD congruent with CD Reason : Reflexive property
Step 3:
Segment AD congruent segment DB reason: Angle bisector in triangle
Step 4:
triangle ACD congruent triangle DCB reason: SSA using sides AD = DB, side CD (common) and angles Step 5:
angle Therefore, the last option of steps is the correct one as per your list of options.