桌子的角有点儿尖，小心别碰到。

Zhuōzi de jiǎo yǒudiǎnr jiān, xiǎoxīn bié pèngdào.

The corner of the table is a bit sharp, be careful not to bump into it.

正方形有四个角。

Zhèngfāngxíng yǒu sì gè jiǎo.

Squares have four corners.

我想把这瓶花放在房间的一角。

Wǒ xiǎng bǎ zhè píng huā fàng zài fángjiān de yìjiǎo.

I want to put this vase of flowers in a corner of the room.