deltamath.com 1 . . . Basic Triangle Proofs (Congruence Only - No CPCTC) Sep 18, 10:34:42 PM Watch help video Given: AE || FD, AE ~ FD and AC ~ BD. Prove: AAEC ~ ADFB. Step Statement Reason AE |FD 1 AE ~ FD Given AC ~ BD try Type of Statement E A B D F Note: the segment AD is a straight segment.Basic Triangle Proofs (Congruence Only - No CPCTC) Sep 18, 10:34:42 PM Watch help video Given: AE || FD, AE ~ FD and AC ~ BD. Prove: AAEC ~ ADFB. Step Statement Reason AE | FD AE ~ FD Given AC ~ BD try Type of Statement XY ~ WZ E LX ~ LY AXYZ ~ ATUV LX is a right angle Classify a triangle D F Note: the segment AD is a straight segment