also: だいけい
noun, noun which may take the genitive case particle 'no'
Geometric term for a quadrilateral with at least one pair of parallel sides. The spelling 梯形 is now rare; modern Japanese uses 台形.
See also: 台形
古い教科書では「梯形」と書かれているが、今は「台形」が普通だ。
In old textbooks it is written as 梯形, but now 台形 is the usual form.
Older kanji form for 'trapezoid'; now usually written as 台形.
Modern standard spelling for 'trapezoid'.
The kanji 梯 means 'ladder' and 形 means 'shape', reflecting the trapezoid's shape. The modern form 台形 uses 台 ('platform') as a simpler substitute.