bisectors of the ABE and $ACD Tet ABC is a Iriongle, D and E Care Points...

 

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bisectors of the ABE and $ACD Tet ABC is a Iriongle, D and E Care Points on AB and AC,respectively. The meet in F. Show thed S80C + $BEc =2文BFC E Construction: Joine AF and pruduce it to meet BG in G (!) bisectors of the ABE and $ACD Tet ABC is a Iriongle, D and E Care Points on AB and AC,respectively. The meet in F. Show thed S80C + $BEc =2文BFC E Construction: Joine AF and pruduce it to meet BG in G (!)