とう へん三角 さんかく けいじゃありませんでした
ni tōhensanka kukeijārimasendeshita

Noun
Desu Copula

The polite, past negative form of 二等辺三角形

1. Was not an isosceles triangle.; It was not an isosceles triangle.

Past/Perfective
Negative
Polite
Terminal Form
Geometry