3 sentences

1. 她斜睇了他一眼。

   tā xié dì le tā yī yǎn.

   She glanced at him sideways.

   Source: Dong Chinese Dictionary

2. 他的领带系斜了。

   tā de lǐng​dài jì xié le.

   His tie is tied crooked.

   Source: Dong Chinese Dictionary

3. 勾股定理中的“弦”指的就是直角三角形的斜边。

   gōu gǔ dìng​lǐ zhōng de“ xián” zhǐ de jiù shì zhí​jiǎo sān​jiǎo​xíng de xié biān.

   The 'xian' in the Pythagorean theorem refers to the hypotenuse of a right triangle.

   Source: Dong Chinese Dictionary