定理

dìnglǐ

noun #21,082

Measure Word

一个定理 gè

Meanings

1 theorem (mathematics)
2 established principle

Characters

fixed / established / certain

principle / logic / reason

Examples

HSK 6

学生需要学会证明这个定理。

Xuéshēng xūyào xuéhuì zhèngmíng zhège dìnglǐ.

Students need to learn how to prove this theorem.

HSK 7-9

勾股定理是数学中最著名的定理之一。

Gōugǔ dìnglǐ shì shùxué zhōng zuì zhùmíng de dìnglǐ zhīyī.

The Pythagorean theorem is one of the most famous theorems in mathematics.

Tips

memory

定 (fixed / established) + 理 (principle / logic) = an established principle that has been proven - a theorem. Compare 公理 (axiom), which needs no proof.

Stroke Order

定 dìng

理 lǐ