Trapezium

"Trapezium" in Japanese

不等辺四辺形

futōhenshihenkei

(polygon with no parallel sides and no equal sides)

台形

daikei

(polygon with two parallel sides)

大菱形骨

dairyōkeikotsu

(bone)

梯形

teikei

(polygon with two parallel sides)

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.