Correct
顶点
/ dǐngdiǎn /
Strokes
Definition
summit/peak/(math.) vertex
Example
As a Noun
apex; zenith; acme; pinnacle
1
Fāzhǎn
发展
de
的
dǐngdiǎn
顶点
acme of development
2
Dádào
达到
chénggōng
成功
/
shìyè
事业
de
的
dǐngdiǎn
顶点
reach the pinnacle of one's success/career
As a Noun
vertex; apex
3
Sānjiǎoxíng
三角形
de
的
dǐngdiǎn
顶点
vertex/apex of a triangle