とう伏角 ふっかく せんではありませんでした
tōfukkakusendewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 等伏角線

1. Was not a waiting/passive angle line.; Was not an awaiting/passive corner line.

Past/Perfective
Negative
Polite
Formal Register
Geology