何

几何图形

jǐ hé tú xíng

geometric figure

何须

hé xū

there is no need

何妨

hé fáng

what harm is there in (doing sth)

任何

rèn hé

any; whatever; whichever

圣何塞

shèng hé sài

San Jose

何时

hé shí

when

何谓

hé wèi

(literary) what is?

何去何从

hé qù hé cóng

what course to follow

双曲几何

shuāng qū jǐ hé

hyperbolic geometry

黎曼几何

lí màn jǐ hé

(math.) Riemannian geometry

黎曼几何学

lí màn jǐ hé xué

Riemannian geometry

一部二十四史，不知从何说起

yī bù èr shí sì shǐ , bù zhī cóng hé shuō qǐ

It's a long and intricate story, I hardly know where to start.