底辺 ていへん base (of a polygon) #11,291 Meanings noun, geometry base (of a polygon) bottom (of the social scale); lower levels; lower classes base (e.g. of support); foundation; basis Its kanji 底 テイ · そこ bottom, sole, depth, bottom price, base, kind, sort 辺 ヘン · あた.り、ほと.り、-べ environs, boundary, border, vicinity