sei3 bin1 jing4四邊形四边形
Jyutpingsei3 bin1 jing4
Yalesei bīn yìhng
Definition
Quadrilateral; a polygon with four sides.
neutralschool
How it's used
Mathematical terms like this are often used in academic or formal contexts, but they are pronounced with Cantonese phonology. While students learn these in geometry classes, they rarely appear in casual conversation unless discussing shapes or architecture. It is a precise term that covers a wide variety of specific shapes.
Measure word
go3個goExamples
The sum of the four angles of this quadrilateral is 360 degrees.
Do you know how to draw a quadrilateral?
Related words
Common phrases
draw a quadrilateral
area of a quadrilateral
Common mistake
Learners sometimes confuse this with the more general term 多邊形, which refers to any polygon. Ensure you are specifically referring to a four-sided figure when using this term.
Grammar color guide
Noun
Verb
Adjective
Adverb
Pronoun
Classifier
Particle
Connector
Grammar guides
- NegationHow to say no, not, didn't, and don't in Cantonese. The four main negation words and when to use each one.
- Numbers and moneyCounting, talking about money, and asking how much things cost. Includes the two words for two and the everyday words for dollars and cents.
- Aspect markersCantonese has no tenses, but it does have aspect markers. Learn how zo2, gwo3, gan2, and hai2 dou6 show completion, experience, and ongoing action.



