Sindbad~EG File Manager

NEAB
NCDCE
COECD  assumption
 CODCE  lemma:collinearorder
NCECD  reductio
COCED  assumption
 CODCE  lemma:collinearorder
NCCED  reductio
TRDCE  defn:triangle
TRCED  defn:triangle
TRECD  defn:triangle
TGCDDECE  proposition:20
TGCEEDCD proposition:20
TGECCDED  proposition:20
TGCDECED  lemma:TGsymmetric
TGCDDEEC  lemma:TGflip
TGDECDEC  lemma:TGsymmetric
TGEDCDEC  lemma:TGflip
TGCDEDEC  lemma:TGsymmetric
TGECEDCD  lemma:TGflip
ANEEAGEC+EEAFCD+EEGFED+RAABG+TRAGF proposition:22
EEAGEC
EEAGCE  lemma:congruenceflip
EEAFCD
EEGFED
EEFGDE  lemma:congruenceflip
RAABG
TRAGF
EQEE    cn:equalityreflexive
EQDD    cn:equalityreflexive
EQFF    cn:equalityreflexive
EQGG    cn:equalityreflexive
EQCE assumption
 CODCE  defn:collinear
NECE reductio
EQCD assumption
 COCDE defn:collinear
 CODCE lemma:collinearorder
NECD reductio
RACEE  lemma:ray4
RACDD  lemma:ray4
COFAG  assumption
 COAGF  lemma:collinearorder
 NCAGF  defn:triangle
NCFAG  reductio
EQAF  assumption
 COAFG defn:collinear
 COFAG  lemma:collinearorder
NEAF reductio
RAAFF  lemma:ray4
EQAG assumption
 COAGF defn:collinear
 COFAG  lemma:collinearorder
NEAG reductio
RAAGG  lemma:ray4
EAFAGDCE  defn:equalangles
ANRAABG+EAFAGDCE