底てい辺へん

noun

base of a polygon

Geometry term for the side treated as the base of a triangle or other polygon.

• 三さん角かく形けいの底てい辺へんの長ながさを求もとめなさい。

  Find the length of the base of the triangle.

noun

bottom of the social scale; lower levels; lower classes

Used for the lowest layer of a social, economic, or organizational hierarchy. In social contexts it can sound harsh, stigmatizing, or critical.

• 彼かれは社しゃ会かいの底てい辺へんから抜ぬけ出だそうと必ひっ死しに働はたらいた。

  He worked desperately to escape the bottom of society.

noun

base; foundation; basis

Refers to the broad supporting base or foundation of something, often in phrases such as 底辺を支える or 底辺を拡大する. The image may overlap with a lower layer that supports the whole.

• 地ち域いきクラブの育いく成せいは、競きょう技ぎの底てい辺へんを拡かく大だいするために重じゅう要ようだ。

  Developing local clubs is important for expanding the base of the sport.