Which is the missing step in the proof below? There is a 4th row that blank...
Given: ABCD is a parallelogram. ACED is a parallelogram
Prove: ΔABC≅ΔDCE
Answer choices are
A. ΔABC ≅ ΔDCE by the SAS congruence theorem
B. ΔABC ≅ ΔDCE by the ASA congruence theorem
C. ΔABC ≅ ΔDCE by the SSS congruence theorem
D. ΔABC ≅ ΔDCE by the HL congruence theorem
