梯形 (ていけい, teikei) Japanese meaning: trapezoid | Kotomora形
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In old textbooks it is written as 梯形, but now 台形 is the usual form.
台形
Modern standard spelling for 'trapezoid'.
Etymology
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.
