Sindbad~EG File Manager

TRABC
EAABCACB
NEAB    lemma:angledistinct
NEAC    lemma:angledistinct
NEBA  lemma:inequalitysymmetric
NECA  lemma:inequalitysymmetric
NEBC  lemma:angledistinct
NECB  lemma:inequalitysymmetric
LTACAB   assumption
 EEBAAB   cn:equalityreverse
 ANBEBDA+EEBDAC  proposition:03
 BEBDA
 EEBDAC
 EEDBAC  lemma:congruenceflip
 RABAD   lemma:ray4
 EQCC    cn:equalityreflexive
 RABCC  lemma:ray4
 NCABC   defn:triangle
 EAABCABC lemma:equalanglesreflexive
 EAABCDBC  lemma:equalangleshelper
 EADBCABC  lemma:equalanglessymmetric
 EADBCACB  lemma:equalanglestransitive
 EEBDCA  lemma:congruenceflip
 EEBCCB  cn:equalityreverse
 ANEEDCAB+EABDCCAB+EABCDCBA   proposition:04
 EABCDCBA
 COCBA   assumption
  COABC   lemma:collinearorder
 NCCBA   reductio
 EACBAABC  lemma:ABCequalsCBA
 EABCDABC  lemma:equalanglestransitive
 EAABCACB
 EABCDACB  lemma:equalanglestransitive
 COACB   assumption
  COABC  lemma:collinearorder
 NCACB  reductio
 EAACBBCA  lemma:ABCequalsCBA
 EABCDBCA lemma:equalanglestransitive
 EABCABCD  lemma:equalanglessymmetric
 EQBB     cn:equalityreflexive
 EQAA     cn:equalityreflexive
 RACBB   lemma:ray4
 RACAA   lemma:ray4
 BEBDA
 COBCD    assumption
  COBDA   defn:collinear
  CODBA  lemma:collinearorder
  CODBC  lemma:collinearorder
  NEBD   lemma:betweennotequal
  NEDB   lemma:inequalitysymmetric
  COBAC  lemma:collinear4
  COABC   lemma:collinearorder
 NCBCD  reductio
 EABCDBCD  lemma:equalanglesreflexive
 AOBCDBCA  defn:anglelessthan
 AOBCABCA  lemma:angleorderrespectscongruence2
 NOAOBCABCA  lemma:angletrichotomy
NOLTACAB  reductio