noun, noun which may take the genitive case particle 'no'
Geometric term for a quadrilateral with at least one pair of parallel sides. In Japanese mathematics, 台形 usually corresponds to the English 'trapezoid' (US) or 'trapezium' (UK).
この図形は台形です。
This shape is a trapezoid.
台形の面積を求める公式を覚えていますか。
Do you remember the formula for finding the area of a trapezoid?
From 台 (だい, 'platform') + 形 (けい, 'shape'), referring to the shape of a platform or table.