Firstly there is no N on your diagram but id doesnt matter. I think i get the drift.
<ABC=130 therrefore <FCD=130 corresponding angles on parallel lines.
<FCD=<FCE+<ECD adjacent angles
<FCE=90 therefore <ECD=40
<FEC=<ECD Alternate angles on parallel lines
therefore
<FEC=40 degrees
Firstly there is no N on your diagram but id doesnt matter. I think i get the drift.
<ABC=130 therrefore <FCD=130 corresponding angles on parallel lines.
<FCD=<FCE+<ECD adjacent angles
<FCE=90 therefore <ECD=40
<FEC=<ECD Alternate angles on parallel lines
therefore
<FEC=40 degrees