Corresponding Parts of Congruent Triangles (CPCTC)

Prove\ segment\ \overline{BC}\ is\ congruent\ to\ segment\ \overline{CE}.

 

given:\ \overline{AC}\cong\overline{DC}

\angle CDE\cong\angle CAB

 

 

 

  1. \overline{AC}\cong\overline{DC} \Rightarrow given
  2. \angle CDE\cong\angle CAB \Rightarrow given
  3. \angle BCA\cong\angle DCE \Rightarrow vertical\ angles\ theorem
  4. \Delta BAC\cong\Delta EDC\Rightarrow ASA\ (Angle\ Side\ Angle)
  5. \overline{BC}\cong\overline{CE}\Rightarrow CDCTC